1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index a0c3b16819..4cdf0a8502 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -1708,7 +1708,7 @@ class RoomEventSource(EventSource[RoomStreamToken, EventBase]):
 
         if from_key.topological:
             logger.warning("Stream has topological part!!!! %r", from_key)
-            from_key = RoomStreamToken(None, from_key.stream)
+            from_key = RoomStreamToken(stream=from_key.stream)
 
         app_service = self.store.get_app_service_by_user_id(user.to_string())
         if app_service: