diff --git a/tests/utils.py b/tests/utils.py
 index eeb4bce5a2..d4ab4209ed 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -280,7 +280,6 @@ def setup_test_homeserver(
             db_config=config.database_config,
             version_string="Synapse/tests",
             database_engine=db_engine,
-            room_list_handler=object(),
             tls_server_context_factory=Mock(),
             tls_client_options_factory=Mock(),
             reactor=reactor,
@@ -351,7 +350,6 @@ def setup_test_homeserver(
             config=config,
             version_string="Synapse/tests",
             database_engine=db_engine,
-            room_list_handler=object(),
             tls_server_context_factory=Mock(),
             tls_client_options_factory=Mock(),
             reactor=reactor,
  |