diff --git a/tests/test_invoices.py b/tests/test_invoices.py
index d1b47226f..fca783ea9 100644
--- a/tests/test_invoices.py
+++ b/tests/test_invoices.py
@@ -42,7 +42,7 @@ def test_invoice(node_factory, chainparams):
     b11 = inv['bolt11']
     # Amount usually comes after currency (bcrt in our case),
     # but an any-amount invoices will have no amount
-    assert b11.startswith("lnbcrt1")
+    assert b11.startswith("ln" + chainparams['bip173_prefix'])
     # By bech32 rules, the last '1' digit is the separator
     # between the human-readable and data parts. We want
     # to match the "lnbcrt1" above with the '1' digit as the
diff --git a/tests/test_misc.py b/tests/test_misc.py
index 0142bf35c..21760bffb 100644
--- a/tests/test_misc.py
+++ b/tests/test_misc.py
@@ -438,7 +438,7 @@ def test_bech32_funding(node_factory, chainparams):
     # fund a bech32 address and then open a channel with it
     res = l1.openchannel(l2, 20000, 'bech32')
     address = res['address']
-    assert address[0:4] == chainparams['bip173_prefix']
+    assert address.startswith(chainparams['bip173_prefix'])
 
     # probably overly paranoid checking
     wallettxid = res['wallettxid']