1 files changed, 1 insertions, 1 deletions
diff --git a/tests/replication/test_federation_sender_shard.py b/tests/replication/test_federation_sender_shard.py
index 9c4a9c3563..779745ae9d 100644
--- a/tests/replication/test_federation_sender_shard.py
+++ b/tests/replication/test_federation_sender_shard.py
@@ -226,7 +226,7 @@ class FederationSenderTestCase(BaseMultiWorkerStreamTestCase):
         }
 
         builder = factory.for_room_version(room_version, event_dict)
-        join_event = self.get_success(builder.build(prev_event_ids))
+        join_event = self.get_success(builder.build(prev_event_ids, None))
 
         self.get_success(federation.on_send_join_request(remote_server, join_event))
         self.replicate()