1 files changed, 1 insertions, 2 deletions
diff --git a/synapse/handlers/event_auth.py b/synapse/handlers/event_auth.py
index d089c56286..365063ebdf 100644
--- a/synapse/handlers/event_auth.py
+++ b/synapse/handlers/event_auth.py
@@ -55,8 +55,7 @@ class EventAuthHandler:
         """Check an event passes the auth rules at its own auth events"""
         auth_event_ids = event.auth_event_ids()
         auth_events_by_id = await self._store.get_events(auth_event_ids)
-        auth_events = {(e.type, e.state_key): e for e in auth_events_by_id.values()}
-        check_auth_rules_for_event(room_version_obj, event, auth_events)
+        check_auth_rules_for_event(room_version_obj, event, auth_events_by_id.values())
 
     def compute_auth_events(
         self,