1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py
index 10dce21cea..9b4e6d6aa8 100644
--- a/synapse/storage/roommember.py
+++ b/synapse/storage/roommember.py
@@ -26,7 +26,7 @@ from twisted.internet import defer
 from synapse.api.constants import EventTypes, Membership
 from synapse.storage.events_worker import EventsWorkerStore
 from synapse.types import get_domain_from_id
-from synapse.util.async import Linearizer
+from synapse.util.async_helpers import Linearizer
 from synapse.util.caches import intern_string
 from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
 from synapse.util.stringutils import to_ascii