1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 4260426369..c3ee8db4f0 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -519,6 +519,9 @@ class RoomMemberHandler(object):
             yield self.store.set_room_is_public(old_room_id, False)
             yield self.store.set_room_is_public(room_id, True)
 
+        # Transfer alias mappings in the room directory
+        yield self.store.update_aliases_for_room(old_room_id, room_id)
+
         # Check if any groups we own contain the predecessor room
         local_group_ids = yield self.store.get_local_groups_for_room(old_room_id)
         for group_id in local_group_ids: