diff --git a/lnbits/app.py b/lnbits/app.py
index 65d63e67b..5167055b2 100644
--- a/lnbits/app.py
+++ b/lnbits/app.py
@@ -95,7 +95,7 @@ async def check_funding_source() -> None:
     original_sigint_handler = signal.getsignal(signal.SIGINT)
 
     def signal_handler(signal, frame):
-        logger.debug(f"SIGINT received, terminating LNbits.")
+        logger.debug("SIGINT received, terminating LNbits.")
         sys.exit(1)
 
     signal.signal(signal.SIGINT, signal_handler)
diff --git a/lnbits/core/crud.py b/lnbits/core/crud.py
index 16cde8356..183f663a0 100644
--- a/lnbits/core/crud.py
+++ b/lnbits/core/crud.py
@@ -702,7 +702,7 @@ async def delete_admin_settings():
 
 
 async def update_admin_settings(data: EditableSettings):
-    await db.execute(f"UPDATE settings SET editable_settings = ?", (json.dumps(data),))
+    await db.execute("UPDATE settings SET editable_settings = ?", (json.dumps(data),))
 
 
 async def update_super_user(super_user: str):
@@ -711,7 +711,7 @@ async def update_super_user(super_user: str):
 
 
 async def create_admin_settings(super_user: str, new_settings: dict):
-    sql = f"INSERT INTO settings (super_user, editable_settings) VALUES (?, ?)"
+    sql = "INSERT INTO settings (super_user, editable_settings) VALUES (?, ?)"
     await db.execute(sql, (super_user, json.dumps(new_settings)))
     return await get_super_settings()
 
@@ -740,7 +740,7 @@ async def update_migration_version(conn, db_name, version):
 async def create_tinyurl(domain: str, endless: bool, wallet: str):
     tinyurl_id = shortuuid.uuid()[:8]
     await db.execute(
-        f"INSERT INTO tiny_url (id, url, endless, wallet) VALUES (?, ?, ?, ?)",
+        "INSERT INTO tiny_url (id, url, endless, wallet) VALUES (?, ?, ?, ?)",
         (
             tinyurl_id,
             domain,
@@ -753,7 +753,7 @@ async def create_tinyurl(domain: str, endless: bool, wallet: str):
 
 async def get_tinyurl(tinyurl_id: str) -> Optional[TinyURL]:
     row = await db.fetchone(
-        f"SELECT * FROM tiny_url WHERE id = ?",
+        "SELECT * FROM tiny_url WHERE id = ?",
         (tinyurl_id,),
     )
     return TinyURL.from_row(row) if row else None
@@ -761,7 +761,7 @@ async def get_tinyurl(tinyurl_id: str) -> Optional[TinyURL]:
 
 async def get_tinyurl_by_url(url: str) -> List[TinyURL]:
     rows = await db.fetchall(
-        f"SELECT * FROM tiny_url WHERE url = ?",
+        "SELECT * FROM tiny_url WHERE url = ?",
         (url,),
     )
     return [TinyURL.from_row(row) for row in rows]
@@ -769,6 +769,6 @@ async def get_tinyurl_by_url(url: str) -> List[TinyURL]:
 
 async def delete_tinyurl(tinyurl_id: str):
     await db.execute(
-        f"DELETE FROM tiny_url WHERE id = ?",
+        "DELETE FROM tiny_url WHERE id = ?",
         (tinyurl_id,),
     )
diff --git a/lnbits/core/services.py b/lnbits/core/services.py
index 1e33cd470..adee88c99 100644
--- a/lnbits/core/services.py
+++ b/lnbits/core/services.py
@@ -229,7 +229,7 @@ async def pay_invoice(
                 logger.debug(f"payment successful {payment.checking_id}")
         elif payment.checking_id is None and payment.ok is False:
             # payment failed
-            logger.warning(f"backend sent payment failure")
+            logger.warning("backend sent payment failure")
             async with db.connect() as conn:
                 logger.debug(f"deleting temporary payment {temp_id}")
                 await delete_wallet_payment(temp_id, wallet_id, conn=conn)
@@ -431,7 +431,7 @@ async def check_admin_settings():
         update_cached_settings(settings_db.dict())
 
         # printing settings for debugging
-        logger.debug(f"Admin settings:")
+        logger.debug("Admin settings:")
         for key, value in settings.dict(exclude_none=True).items():
             logger.debug(f"{key}: {value}")
 
diff --git a/lnbits/extensions/boltcards/crud.py b/lnbits/extensions/boltcards/crud.py
index 9c7d299d6..0a678e709 100644
--- a/lnbits/extensions/boltcards/crud.py
+++ b/lnbits/extensions/boltcards/crud.py
@@ -160,7 +160,7 @@ async def update_card_otp(otp: str, id: str):
 
 
 async def get_hit(hit_id: str) -> Optional[Hit]:
-    row = await db.fetchone(f"SELECT * FROM boltcards.hits WHERE id = ?", (hit_id,))
+    row = await db.fetchone("SELECT * FROM boltcards.hits WHERE id = ?", (hit_id,))
     if not row:
         return None
 
@@ -183,7 +183,7 @@ async def get_hits(cards_ids: List[str]) -> List[Hit]:
 
 async def get_hits_today(card_id: str) -> List[Hit]:
     rows = await db.fetchall(
-        f"SELECT * FROM boltcards.hits WHERE card_id = ?",
+        "SELECT * FROM boltcards.hits WHERE card_id = ?",
         (card_id,),
     )
     updatedrow = []
@@ -258,7 +258,7 @@ async def create_refund(hit_id, refund_amount) -> Refund:
 
 async def get_refund(refund_id: str) -> Optional[Refund]:
     row = await db.fetchone(
-        f"SELECT * FROM boltcards.refunds WHERE id = ?", (refund_id,)
+        "SELECT * FROM boltcards.refunds WHERE id = ?", (refund_id,)
     )
     if not row:
         return None
diff --git a/lnbits/extensions/boltcards/lnurl.py b/lnbits/extensions/boltcards/lnurl.py
index d04303725..f5960d117 100644
--- a/lnbits/extensions/boltcards/lnurl.py
+++ b/lnbits/extensions/boltcards/lnurl.py
@@ -180,7 +180,7 @@ async def lnurlp_response(req: Request, hit_id: str = Query(None)):
     card = await get_card(hit.card_id)
     assert card
     if not hit:
-        return {"status": "ERROR", "reason": f"LNURL-pay record not found."}
+        return {"status": "ERROR", "reason": "LNURL-pay record not found."}
     if not card.enable:
         return {"status": "ERROR", "reason": "Card is disabled."}
     payResponse = {
@@ -204,7 +204,7 @@ async def lnurlp_callback(hit_id: str = Query(None), amount: str = Query(None)):
     card = await get_card(hit.card_id)
     assert card
     if not hit:
-        return {"status": "ERROR", "reason": f"LNURL-pay record not found."}
+        return {"status": "ERROR", "reason": "LNURL-pay record not found."}
 
     _, payment_request = await create_invoice(
         wallet_id=card.wallet,
diff --git a/lnbits/extensions/boltz/crud.py b/lnbits/extensions/boltz/crud.py
index 1c9eb700a..5ad923f6d 100644
--- a/lnbits/extensions/boltz/crud.py
+++ b/lnbits/extensions/boltz/crud.py
@@ -32,7 +32,7 @@ async def get_submarine_swaps(wallet_ids: Union[str, List[str]]) -> List[Submari
 
 async def get_all_pending_submarine_swaps() -> List[SubmarineSwap]:
     rows = await db.fetchall(
-        f"SELECT * FROM boltz.submarineswap WHERE status='pending' order by time DESC",
+        "SELECT * FROM boltz.submarineswap WHERE status='pending' order by time DESC",
     )
     return [SubmarineSwap(**row) for row in rows]
 
@@ -107,7 +107,7 @@ async def get_reverse_submarine_swaps(
 
 async def get_all_pending_reverse_submarine_swaps() -> List[ReverseSubmarineSwap]:
     rows = await db.fetchall(
-        f"SELECT * FROM boltz.reverse_submarineswap WHERE status='pending' order by time DESC"
+        "SELECT * FROM boltz.reverse_submarineswap WHERE status='pending' order by time DESC"
     )
 
     return [ReverseSubmarineSwap(**row) for row in rows]
diff --git a/lnbits/extensions/boltz/tasks.py b/lnbits/extensions/boltz/tasks.py
index 289332a20..63b981b1c 100644
--- a/lnbits/extensions/boltz/tasks.py
+++ b/lnbits/extensions/boltz/tasks.py
@@ -101,10 +101,10 @@ async def check_for_pending_swaps():
         swaps = await get_all_pending_submarine_swaps()
         reverse_swaps = await get_all_pending_reverse_submarine_swaps()
         if len(swaps) > 0 or len(reverse_swaps) > 0:
-            logger.debug(f"Boltz - startup swap check")
+            logger.debug("Boltz - startup swap check")
     except:
         logger.error(
-            f"Boltz - startup swap check, database is not created yet, do nothing"
+            "Boltz - startup swap check, database is not created yet, do nothing"
         )
         return
 
diff --git a/lnbits/extensions/boltz/views_api.py b/lnbits/extensions/boltz/views_api.py
index 72f66420d..ffec612c6 100644
--- a/lnbits/extensions/boltz/views_api.py
+++ b/lnbits/extensions/boltz/views_api.py
@@ -37,7 +37,7 @@ from .utils import check_balance, create_boltz_client, execute_reverse_swap
 
 @boltz_ext.get(
     "/api/v1/swap/mempool",
-    name=f"boltz.get /swap/mempool",
+    name="boltz.get /swap/mempool",
     summary="get a the mempool url",
     description="""
         This endpoint gets the URL from mempool.space
@@ -52,7 +52,7 @@ async def api_mempool_url():
 # NORMAL SWAP
 @boltz_ext.get(
     "/api/v1/swap",
-    name=f"boltz.get /swap",
+    name="boltz.get /swap",
     summary="get a list of swaps a swap",
     description="""
         This endpoint gets a list of normal swaps.
@@ -74,7 +74,7 @@ async def api_submarineswap(
 
 @boltz_ext.post(
     "/api/v1/swap/refund",
-    name=f"boltz.swap_refund",
+    name="boltz.swap_refund",
     summary="refund of a swap",
     description="""
         This endpoint attempts to refund a normal swaps, creates onchain tx and sets swap status ro refunded.
@@ -122,7 +122,7 @@ async def api_submarineswap_refund(swap_id: str):
 @boltz_ext.post(
     "/api/v1/swap",
     status_code=status.HTTP_201_CREATED,
-    name=f"boltz.post /swap",
+    name="boltz.post /swap",
     summary="create a submarine swap",
     description="""
         This endpoint creates a submarine swap
@@ -164,7 +164,7 @@ async def api_submarineswap_create(data: CreateSubmarineSwap):
 # REVERSE SWAP
 @boltz_ext.get(
     "/api/v1/swap/reverse",
-    name=f"boltz.get /swap/reverse",
+    name="boltz.get /swap/reverse",
     summary="get a list of reverse swaps",
     description="""
         This endpoint gets a list of reverse swaps.
@@ -187,7 +187,7 @@ async def api_reverse_submarineswap(
 @boltz_ext.post(
     "/api/v1/swap/reverse",
     status_code=status.HTTP_201_CREATED,
-    name=f"boltz.post /swap/reverse",
+    name="boltz.post /swap/reverse",
     summary="create a reverse submarine swap",
     description="""
         This endpoint creates a reverse submarine swap
@@ -221,7 +221,7 @@ async def api_reverse_submarineswap_create(
 
 @boltz_ext.get(
     "/api/v1/swap/reverse/auto",
-    name=f"boltz.get /swap/reverse/auto",
+    name="boltz.get /swap/reverse/auto",
     summary="get a list of auto reverse swaps",
     description="""
         This endpoint gets a list of auto reverse swaps.
@@ -244,7 +244,7 @@ async def api_auto_reverse_submarineswap(
 @boltz_ext.post(
     "/api/v1/swap/reverse/auto",
     status_code=status.HTTP_201_CREATED,
-    name=f"boltz.post /swap/reverse/auto",
+    name="boltz.post /swap/reverse/auto",
     summary="create a auto reverse submarine swap",
     description="""
         This endpoint creates a auto reverse submarine swap
@@ -273,7 +273,7 @@ async def api_auto_reverse_submarineswap_create(data: CreateAutoReverseSubmarine
 
 @boltz_ext.delete(
     "/api/v1/swap/reverse/auto/{swap_id}",
-    name=f"boltz.delete /swap/reverse/auto",
+    name="boltz.delete /swap/reverse/auto",
     summary="delete a auto reverse submarine swap",
     description="""
         This endpoint deletes a auto reverse submarine swap
@@ -288,7 +288,7 @@ async def api_auto_reverse_submarineswap_delete(swap_id: str):
 
 @boltz_ext.post(
     "/api/v1/swap/status",
-    name=f"boltz.swap_status",
+    name="boltz.swap_status",
     summary="shows the status of a swap",
     description="""
         This endpoint attempts to get the status of the swap.
@@ -315,7 +315,7 @@ async def api_swap_status(swap_id: str):
 
 @boltz_ext.get(
     "/api/v1/swap/boltz",
-    name=f"boltz.get /swap/boltz",
+    name="boltz.get /swap/boltz",
     summary="get a boltz configuration",
     description="""
         This endpoint gets configuration for boltz. (limits, fees...)
diff --git a/lnbits/extensions/cashu/views_api.py b/lnbits/extensions/cashu/views_api.py
index d896cf713..682412a4e 100644
--- a/lnbits/extensions/cashu/views_api.py
+++ b/lnbits/extensions/cashu/views_api.py
@@ -322,7 +322,7 @@ async def melt_coins(
             await pay_invoice(
                 wallet_id=cashu.wallet,
                 payment_request=invoice,
-                description=f"Pay cashu invoice",
+                description="Pay cashu invoice",
                 extra={"tag": "cashu", "cashu_name": cashu.name},
             )
         except Exception as e:
@@ -349,7 +349,7 @@ async def melt_coins(
             detail=f"Cashu: {str(e)}",
         )
     finally:
-        logger.debug(f"Cashu: Unset pending")
+        logger.debug("Cashu: Unset pending")
         # delete proofs from pending list
         await ledger._unset_proofs_pending(proofs)
 
diff --git a/lnbits/extensions/deezy/crud.py b/lnbits/extensions/deezy/crud.py
index 1e1e285d5..38adc2666 100644
--- a/lnbits/extensions/deezy/crud.py
+++ b/lnbits/extensions/deezy/crud.py
@@ -7,7 +7,7 @@ from .models import BtcToLnSwap, LnToBtcSwap, Token, UpdateLnToBtcSwap
 async def get_ln_to_btc() -> List[LnToBtcSwap]:
 
     rows = await db.fetchall(
-        f"SELECT * FROM deezy.ln_to_btc_swap ORDER BY created_at DESC",
+        "SELECT * FROM deezy.ln_to_btc_swap ORDER BY created_at DESC",
     )
 
     return [LnToBtcSwap(**row) for row in rows]
@@ -16,7 +16,7 @@ async def get_ln_to_btc() -> List[LnToBtcSwap]:
 async def get_btc_to_ln() -> List[BtcToLnSwap]:
 
     rows = await db.fetchall(
-        f"SELECT * FROM deezy.btc_to_ln_swap ORDER BY created_at DESC",
+        "SELECT * FROM deezy.btc_to_ln_swap ORDER BY created_at DESC",
     )
 
     return [BtcToLnSwap(**row) for row in rows]
@@ -25,7 +25,7 @@ async def get_btc_to_ln() -> List[BtcToLnSwap]:
 async def get_token() -> Optional[Token]:
 
     row = await db.fetchone(
-        f"SELECT * FROM deezy.token ORDER BY created_at DESC",
+        "SELECT * FROM deezy.token ORDER BY created_at DESC",
     )
 
     return Token(**row) if row else None
diff --git a/lnbits/extensions/deezy/migrations.py b/lnbits/extensions/deezy/migrations.py
index 67455d6b5..42c3973e9 100644
--- a/lnbits/extensions/deezy/migrations.py
+++ b/lnbits/extensions/deezy/migrations.py
@@ -15,7 +15,7 @@ async def m001_initial(db):
         """
     )
     await db.execute(
-        f"""
+        """
         CREATE TABLE deezy.btc_to_ln_swap (
             id TEXT PRIMARY KEY,
             ln_address TEXT NOT NULL,
@@ -28,7 +28,7 @@ async def m001_initial(db):
         """
     )
     await db.execute(
-        f"""
+        """
         CREATE TABLE deezy.token (
             deezy_token TEXT NOT NULL,
             created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
diff --git a/lnbits/extensions/events/views_api.py b/lnbits/extensions/events/views_api.py
index c21ccfa88..f27485d87 100644
--- a/lnbits/extensions/events/views_api.py
+++ b/lnbits/extensions/events/views_api.py
@@ -50,12 +50,12 @@ async def api_event_create(
         event = await get_event(event_id)
         if not event:
             raise HTTPException(
-                status_code=HTTPStatus.NOT_FOUND, detail=f"Event does not exist."
+                status_code=HTTPStatus.NOT_FOUND, detail="Event does not exist."
             )
 
         if event.wallet != wallet.wallet.id:
             raise HTTPException(
-                status_code=HTTPStatus.FORBIDDEN, detail=f"Not your event."
+                status_code=HTTPStatus.FORBIDDEN, detail="Not your event."
             )
         event = await update_event(event_id, **data.dict())
     else:
@@ -69,11 +69,11 @@ async def api_form_delete(event_id, wallet: WalletTypeInfo = Depends(get_key_typ
     event = await get_event(event_id)
     if not event:
         raise HTTPException(
-            status_code=HTTPStatus.NOT_FOUND, detail=f"Event does not exist."
+            status_code=HTTPStatus.NOT_FOUND, detail="Event does not exist."
         )
 
     if event.wallet != wallet.wallet.id:
-        raise HTTPException(status_code=HTTPStatus.FORBIDDEN, detail=f"Not your event.")
+        raise HTTPException(status_code=HTTPStatus.FORBIDDEN, detail="Not your event.")
 
     await delete_event(event_id)
     await delete_event_tickets(event_id)
@@ -101,7 +101,7 @@ async def api_ticket_make_ticket(event_id, name, email):
     event = await get_event(event_id)
     if not event:
         raise HTTPException(
-            status_code=HTTPStatus.NOT_FOUND, detail=f"Event does not exist."
+            status_code=HTTPStatus.NOT_FOUND, detail="Event does not exist."
         )
     try:
         payment_hash, payment_request = await create_invoice(
@@ -121,7 +121,7 @@ async def api_ticket_send_ticket(event_id, payment_hash, data: CreateTicket):
     if not event:
         raise HTTPException(
             status_code=HTTPStatus.NOT_FOUND,
-            detail=f"Event could not be fetched.",
+            detail="Event could not be fetched.",
         )
 
     status = await api_payment(payment_hash)
@@ -141,7 +141,7 @@ async def api_ticket_send_ticket(event_id, payment_hash, data: CreateTicket):
         if not ticket:
             raise HTTPException(
                 status_code=HTTPStatus.NOT_FOUND,
-                detail=f"Event could not be fetched.",
+                detail="Event could not be fetched.",
             )
         return {"paid": True, "ticket_id": ticket.id}
     return {"paid": False}
@@ -152,13 +152,11 @@ async def api_ticket_delete(ticket_id, wallet: WalletTypeInfo = Depends(get_key_
     ticket = await get_ticket(ticket_id)
     if not ticket:
         raise HTTPException(
-            status_code=HTTPStatus.NOT_FOUND, detail=f"Ticket does not exist."
+            status_code=HTTPStatus.NOT_FOUND, detail="Ticket does not exist."
         )
 
     if ticket.wallet != wallet.wallet.id:
-        raise HTTPException(
-            status_code=HTTPStatus.FORBIDDEN, detail=f"Not your ticket."
-        )
+        raise HTTPException(status_code=HTTPStatus.FORBIDDEN, detail="Not your ticket.")
 
     await delete_ticket(ticket_id)
     return "", HTTPStatus.NO_CONTENT
diff --git a/lnbits/extensions/gerty/migrations.py b/lnbits/extensions/gerty/migrations.py
index afef2cfd8..75921a403 100644
--- a/lnbits/extensions/gerty/migrations.py
+++ b/lnbits/extensions/gerty/migrations.py
@@ -68,7 +68,7 @@ async def m006_add_gerty_model_col(db):
     """
     await db.execute("ALTER TABLE gerty.mempool RENAME TO mempool_old")
     await db.execute(
-        f"""
+        """
         CREATE TABLE gerty.mempool (
             id TEXT PRIMARY KEY,
             mempool_endpoint TEXT NOT NULL,
diff --git a/lnbits/extensions/invoices/crud.py b/lnbits/extensions/invoices/crud.py
index 9a05f9c52..396528025 100644
--- a/lnbits/extensions/invoices/crud.py
+++ b/lnbits/extensions/invoices/crud.py
@@ -23,7 +23,7 @@ async def get_invoice(invoice_id: str) -> Optional[Invoice]:
 
 async def get_invoice_items(invoice_id: str) -> List[InvoiceItem]:
     rows = await db.fetchall(
-        f"SELECT * FROM invoices.invoice_items WHERE invoice_id = ?", (invoice_id,)
+        "SELECT * FROM invoices.invoice_items WHERE invoice_id = ?", (invoice_id,)
     )
 
     return [InvoiceItem.from_row(row) for row in rows]
@@ -54,7 +54,7 @@ async def get_invoices(wallet_ids: Union[str, List[str]]) -> List[Invoice]:
 
 async def get_invoice_payments(invoice_id: str) -> List[Payment]:
     rows = await db.fetchall(
-        f"SELECT * FROM invoices.payments WHERE invoice_id = ?", (invoice_id,)
+        "SELECT * FROM invoices.payments WHERE invoice_id = ?", (invoice_id,)
     )
 
     return [Payment.from_row(row) for row in rows]
diff --git a/lnbits/extensions/lnaddress/lnurl.py b/lnbits/extensions/lnaddress/lnurl.py
index c4c3cea55..b38da954b 100644
--- a/lnbits/extensions/lnaddress/lnurl.py
+++ b/lnbits/extensions/lnaddress/lnurl.py
@@ -39,7 +39,7 @@ async def lnurl_response(username: str, domain: str, request: Request):
 async def lnurl_callback(address_id, amount: int = Query(...)):
     address = await get_address(address_id)
     if not address:
-        return LnurlErrorResponse(reason=f"Address not found").dict()
+        return LnurlErrorResponse(reason="Address not found").dict()
 
     amount_received = amount
 
diff --git a/lnbits/extensions/lnurldevice/lnurl.py b/lnbits/extensions/lnurldevice/lnurl.py
index eba2a6930..b8098b40c 100644
--- a/lnbits/extensions/lnurldevice/lnurl.py
+++ b/lnbits/extensions/lnurldevice/lnurl.py
@@ -116,7 +116,7 @@ async def lnurl_v1_params(
             if switch[0] == gpio and switch[1] == profit and switch[2] == amount:
                 check = True
         if not check:
-            return {"status": "ERROR", "reason": f"Switch params wrong"}
+            return {"status": "ERROR", "reason": "Switch params wrong"}
 
         lnurldevicepayment = await create_lnurldevicepayment(
             deviceid=device.id,
@@ -226,7 +226,7 @@ async def lnurl_callback(
         )
     if device.device == "atm":
         if lnurldevicepayment.payload == lnurldevicepayment.payhash:
-            return {"status": "ERROR", "reason": f"Payment already claimed"}
+            return {"status": "ERROR", "reason": "Payment already claimed"}
         if not pr:
             raise HTTPException(
                 status_code=HTTPStatus.FORBIDDEN, detail="No payment request"
@@ -240,7 +240,7 @@ async def lnurl_callback(
             if lnurldevicepayment.payload != k1:
                 return {"status": "ERROR", "reason": "Bad K1"}
             if lnurldevicepayment.payhash != "payment_hash":
-                return {"status": "ERROR", "reason": f"Payment already claimed"}
+                return {"status": "ERROR", "reason": "Payment already claimed"}
 
             lnurldevicepayment_updated = await update_lnurldevicepayment(
                 lnurldevicepayment_id=paymentid, payhash=lnurldevicepayment.payload
diff --git a/lnbits/extensions/lnurlp/crud.py b/lnbits/extensions/lnurlp/crud.py
index d5963b958..83607396f 100644
--- a/lnbits/extensions/lnurlp/crud.py
+++ b/lnbits/extensions/lnurlp/crud.py
@@ -10,7 +10,7 @@ async def create_pay_link(data: CreatePayLinkData, wallet_id: str) -> PayLink:
     link_id = urlsafe_short_hash()[:6]
 
     result = await db.execute(
-        f"""
+        """
         INSERT INTO lnurlp.pay_links (
             id,
             wallet,
diff --git a/lnbits/extensions/market/crud.py b/lnbits/extensions/market/crud.py
index 53a9afd5b..a7af6cde7 100644
--- a/lnbits/extensions/market/crud.py
+++ b/lnbits/extensions/market/crud.py
@@ -31,7 +31,7 @@ from .models import (
 async def create_market_product(data: createProduct) -> Products:
     product_id = urlsafe_short_hash()
     await db.execute(
-        f"""
+        """
         INSERT INTO market.products (id, stall, product, categories, description, image, price, quantity)
         VALUES (?, ?, ?, ?, ?, ?, ?, ?)
         """,
@@ -93,7 +93,7 @@ async def delete_market_product(product_id: str) -> None:
 async def create_market_zone(user, data: createZones) -> Zones:
     zone_id = urlsafe_short_hash()
     await db.execute(
-        f"""
+        """
         INSERT INTO market.zones (
             id,
             "user",
@@ -141,7 +141,7 @@ async def delete_market_zone(zone_id: str) -> None:
 async def create_market_stall(data: createStalls) -> Stalls:
     stall_id = urlsafe_short_hash()
     await db.execute(
-        f"""
+        """
         INSERT INTO market.stalls (
             id,
             wallet,
@@ -255,7 +255,7 @@ async def create_market_order_details(order_id: str, data: List[createOrderDetai
 
 async def get_market_order_details(order_id: str) -> List[OrderDetail]:
     rows = await db.fetchall(
-        f"SELECT * FROM market.order_details WHERE order_id = ?", (order_id,)
+        "SELECT * FROM market.order_details WHERE order_id = ?", (order_id,)
     )
 
     return [OrderDetail(**row) for row in rows]
diff --git a/lnbits/extensions/market/views_api.py b/lnbits/extensions/market/views_api.py
index effba7554..d6e28d269 100644
--- a/lnbits/extensions/market/views_api.py
+++ b/lnbits/extensions/market/views_api.py
@@ -309,7 +309,7 @@ async def api_market_order_create(data: createOrder):
     payment_hash, payment_request = await create_invoice(
         wallet_id=data.wallet,
         amount=data.total,
-        memo=f"New order on Market",
+        memo="New order on Market",
         extra={
             "tag": "market",
             "reference": ref,
diff --git a/lnbits/extensions/nostrnip5/crud.py b/lnbits/extensions/nostrnip5/crud.py
index 66b9840b3..f7ec929c7 100644
--- a/lnbits/extensions/nostrnip5/crud.py
+++ b/lnbits/extensions/nostrnip5/crud.py
@@ -58,7 +58,7 @@ async def get_address_by_local_part(
 
 async def get_addresses(domain_id: str) -> List[Address]:
     rows = await db.fetchall(
-        f"SELECT * FROM nostrnip5.addresses WHERE domain_id = ?", (domain_id,)
+        "SELECT * FROM nostrnip5.addresses WHERE domain_id = ?", (domain_id,)
     )
 
     return [Address.from_row(row) for row in rows]
diff --git a/lnbits/extensions/scrub/migrations.py b/lnbits/extensions/scrub/migrations.py
index f8f2ba43c..f1f4badef 100644
--- a/lnbits/extensions/scrub/migrations.py
+++ b/lnbits/extensions/scrub/migrations.py
@@ -3,7 +3,7 @@ async def m001_initial(db):
     Initial scrub table.
     """
     await db.execute(
-        f"""
+        """
         CREATE TABLE scrub.scrub_links (
             id TEXT PRIMARY KEY,
             wallet TEXT NOT NULL,
diff --git a/lnbits/extensions/smtp/crud.py b/lnbits/extensions/smtp/crud.py
index 5dc384dc0..bc8d9e1a4 100644
--- a/lnbits/extensions/smtp/crud.py
+++ b/lnbits/extensions/smtp/crud.py
@@ -123,7 +123,7 @@ async def set_email_paid(payment_hash: str) -> bool:
     email = await get_email_by_payment_hash(payment_hash)
     if email and email.paid is False:
         await db.execute(
-            f"UPDATE smtp.email SET paid = true WHERE payment_hash = ?", (payment_hash,)
+            "UPDATE smtp.email SET paid = true WHERE payment_hash = ?", (payment_hash,)
         )
         return True
     return False
@@ -131,13 +131,13 @@ async def set_email_paid(payment_hash: str) -> bool:
 
 async def get_email_by_payment_hash(payment_hash: str) -> Optional[Email]:
     row = await db.fetchone(
-        f"SELECT * FROM smtp.email WHERE payment_hash = ?", (payment_hash,)
+        "SELECT * FROM smtp.email WHERE payment_hash = ?", (payment_hash,)
     )
     return Email(**row) if row else None
 
 
 async def get_email(id: str) -> Optional[Email]:
-    row = await db.fetchone(f"SELECT * FROM smtp.email WHERE id = ?", (id,))
+    row = await db.fetchone("SELECT * FROM smtp.email WHERE id = ?", (id,))
     return Email(**row) if row else None
 
 
diff --git a/lnbits/extensions/smtp/migrations.py b/lnbits/extensions/smtp/migrations.py
index fbe77d73f..22500e106 100644
--- a/lnbits/extensions/smtp/migrations.py
+++ b/lnbits/extensions/smtp/migrations.py
@@ -36,4 +36,4 @@ async def m001_initial(db):
 
 
 async def m002_add_payment_hash(db):
-    await db.execute(f"ALTER TABLE smtp.email ADD COLUMN payment_hash TEXT;")
+    await db.execute("ALTER TABLE smtp.email ADD COLUMN payment_hash TEXT;")
diff --git a/lnbits/extensions/watchonly/crud.py b/lnbits/extensions/watchonly/crud.py
index 1d9abcec4..8472fa016 100644
--- a/lnbits/extensions/watchonly/crud.py
+++ b/lnbits/extensions/watchonly/crud.py
@@ -230,7 +230,7 @@ async def create_config(user: str) -> Config:
 
 async def update_config(config: Config, user: str) -> Optional[Config]:
     await db.execute(
-        f"""UPDATE watchonly.config SET json_data = ? WHERE "user" = ?""",
+        """UPDATE watchonly.config SET json_data = ? WHERE "user" = ?""",
         (json.dumps(config.dict()), user),
     )
     row = await db.fetchone(
diff --git a/lnbits/settings.py b/lnbits/settings.py
index bc317e05a..3bec3f72a 100644
--- a/lnbits/settings.py
+++ b/lnbits/settings.py
@@ -366,7 +366,7 @@ except:
 
 # printing enviroment variable for debugging
 if not settings.lnbits_admin_ui:
-    logger.debug(f"Enviroment Settings:")
+    logger.debug("Enviroment Settings:")
     for key, value in settings.dict(exclude_none=True).items():
         logger.debug(f"{key}: {value}")