diff --git a/tests/test_lnpeer.py b/tests/test_lnpeer.py
index be15c8749..c84d5e363 100644
--- a/tests/test_lnpeer.py
+++ b/tests/test_lnpeer.py
@@ -138,6 +138,10 @@ class MockWallet:
     def get_fingerprint(self):
         return ''
 
+    def get_new_sweep_address_for_channel(self):
+        # note: sweep is not tested here, only in regtest
+        return "tb1qqu5newtapamjchgxf0nty6geuykhvwas45q4q4"
+
 
 class MockLNGossip:
     def get_sync_progress_estimate(self):