1 files changed, 3 insertions, 3 deletions
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 55dd3f6cfb..9f14f38f24 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -54,9 +54,9 @@ class RoomMemberStore(SQLBaseStore):
         )
 
         for event in events:
-            txn.call_after(self.get_rooms_for_user.invalidate, event.state_key)
-            txn.call_after(self.get_joined_hosts_for_room.invalidate, event.room_id)
-            txn.call_after(self.get_users_in_room.invalidate, event.room_id)
+            txn.call_after(self.get_rooms_for_user.invalidate, (event.state_key,))
+            txn.call_after(self.get_joined_hosts_for_room.invalidate, (event.room_id,))
+            txn.call_after(self.get_users_in_room.invalidate, (event.room_id,))
 
     def get_room_member(self, user_id, room_id):
         """Retrieve the current state of a room member.