1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 0dffd44e22..2380d17f4e 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -52,7 +52,7 @@ from synapse.events.validator import EventValidator
 from synapse.state import resolve_events_with_factory
 from synapse.types import UserID, get_domain_from_id
 from synapse.util import logcontext, unwrapFirstError
-from synapse.util.async import Linearizer
+from synapse.util.async_helpers import Linearizer
 from synapse.util.distributor import user_joined_room
 from synapse.util.frozenutils import unfreeze
 from synapse.util.logutils import log_function