1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 7b7270fc61..44c5e3239c 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -193,7 +193,7 @@ class RoomMemberHandler(object):
             requester, event, context, extra_users=[target], ratelimit=ratelimit
         )
 
-        prev_state_ids = yield context.get_prev_state_ids(self.store)
+        prev_state_ids = yield context.get_prev_state_ids()
 
         prev_member_event_id = prev_state_ids.get((EventTypes.Member, user_id), None)
 
@@ -601,7 +601,7 @@ class RoomMemberHandler(object):
         if prev_event is not None:
             return
 
-        prev_state_ids = yield context.get_prev_state_ids(self.store)
+        prev_state_ids = yield context.get_prev_state_ids()
         if event.membership == Membership.JOIN:
             if requester.is_guest:
                 guest_can_join = yield self._can_guest_join(prev_state_ids)