1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/room.py b/synapse/storage/databases/main/room.py
index 6d4b9891e7..afb880532e 100644
--- a/synapse/storage/databases/main/room.py
+++ b/synapse/storage/databases/main/room.py
@@ -2268,7 +2268,7 @@ class RoomStore(RoomBackgroundUpdateStore, RoomWorkerStore):
             txn,
             table="partial_state_rooms_servers",
             keys=("room_id", "server_name"),
-            values=((room_id, s) for s in servers),
+            values=[(room_id, s) for s in servers],
         )
         self._invalidate_cache_and_stream(txn, self.is_partial_state_room, (room_id,))
         self._invalidate_cache_and_stream(