Speed up get_joined_hosts

1 files changed, 2 insertions, 1 deletions

diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py

index ab87632d99..1ca88517a2 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -739,10 +739,11 @@ class RoomMemberHandler(BaseHandler):
         if len(current_state_ids) == 1 and create_event_id:
             defer.returnValue(self.hs.is_mine_id(create_event_id))
 
-        for (etype, state_key), event_id in current_state_ids.items():
+        for etype, state_key in current_state_ids:
             if etype != EventTypes.Member or not self.hs.is_mine_id(state_key):
                 continue
 
+            event_id = current_state_ids[(etype, state_key)]
             event = yield self.store.get_event(event_id, allow_none=True)
             if not event:
                 continue