1 files changed, 3 insertions, 1 deletions
diff --git a/tests/utils.py b/tests/utils.py
index 4f0b67df9f..8eb6fdd98e 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -673,6 +673,8 @@ def create_room(hs, room_id, creator_id):
         },
     )
 
-    event, context = yield event_creation_handler.create_new_client_event(builder)
+    event, context = yield defer.ensureDeferred(
+        event_creation_handler.create_new_client_event(builder)
+    )
 
     yield persistence_store.persist_event(event, context)