1 files changed, 1 insertions, 0 deletions
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 2fead9eb0f..7b912ad413 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -586,6 +586,7 @@ class EventsStore(SQLBaseStore):
 
                 current_state = yield resolve_events_with_factory(
                     state_sets,
+                    event_map={},
                     state_map_factory=get_events,
                 )
                 defer.returnValue(current_state)