diff --git a/lnbits/app.py b/lnbits/app.py
index b1312fd8c..8cf44469a 100644
--- a/lnbits/app.py
+++ b/lnbits/app.py
@@ -155,14 +155,7 @@ def register_new_ext_routes(app: FastAPI) -> Callable:
 
 def register_ext_routes(app: FastAPI, ext: Extension) -> None:
     """Register FastAPI routes for extension."""
-    ext_module = importlib.import_module(f"lnbits.extensions.{ext.code}")
-    if ext.version != "":
-        if f"lnbits.extensions.{ext.code}" in sys.modules:
-            del sys.modules[f"lnbits.extensions.{ext.code}"]
-            del ext_module
-            ext_module = importlib.import_module(f"lnbits.upgrades.{ext.version}.{ext.code}-{ext.version}")
-    # else:
-    #     ext_module = importlib.import_module(f"lnbits.extensions.{ext.code}")
+    ext_module = importlib.import_module(ext.module_name)
 
     ext_route = getattr(ext_module, f"{ext.code}_ext")
 
@@ -176,11 +169,9 @@ def register_ext_routes(app: FastAPI, ext: Extension) -> None:
             app.mount(s["path"], s["app"], s["name"])
 
     logger.trace(f"adding route for extension {ext_module}")
-    if ext.version != "":
-        # ext_route.prefix = "/sss"
-        app.include_router(router=ext_route, prefix="/sss")
-    else:
-        app.include_router(router=ext_route)
+
+    prefix = f"/upgrades/{ext.version}" if ext.version != "" else ""
+    app.include_router(router=ext_route, prefix=prefix)
 
 
 def register_startup(app: FastAPI):