diff --git a/electrum/tests/test_lnpeer.py b/electrum/tests/test_lnpeer.py
index 4089ef25b..82b6a8547 100644
--- a/electrum/tests/test_lnpeer.py
+++ b/electrum/tests/test_lnpeer.py
@@ -75,7 +75,7 @@ class MockNetwork:
             await self.tx_queue.put(tx)
 
     async def try_broadcasting(self, tx, name):
-        self.broadcast_transaction(tx)
+        await self.broadcast_transaction(tx)
 
 class MockWallet:
     def set_label(self, x, y):