1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/persist_events.py b/synapse/storage/persist_events.py
index cf66225574..61dfca8fdc 100644
--- a/synapse/storage/persist_events.py
+++ b/synapse/storage/persist_events.py
@@ -550,7 +550,7 @@ class EventsPersistenceStorage(object):
 
         if missing_event_ids:
             # Now pull out the state groups for any missing events from DB
-            event_to_groups = yield self.state_store._get_state_group_for_events(
+            event_to_groups = yield self.main_store._get_state_group_for_events(
                 missing_event_ids
             )
             event_id_to_state_group.update(event_to_groups)