diff --git a/kombu/tests/mocks.py b/kombu/tests/mocks.py
index 98d201cb..6962509b 100644
--- a/kombu/tests/mocks.py
+++ b/kombu/tests/mocks.py
@@ -115,7 +115,7 @@ class Backend(BaseBackend):
     def create_channel(self, connection):
         return connection.channel()
 
-    def drain_events(self, connection, **kwargs):
+    def drain_events(self, **kwargs):
         return "event"
 
     def close_connection(self, connection):