diff --git a/synapse/storage/databases/main/event_federation.py b/synapse/storage/databases/main/event_federation.py index 270b30800bf2..a556f17dac15 100644 --- a/synapse/storage/databases/main/event_federation.py +++ b/synapse/storage/databases/main/event_federation.py @@ -1432,7 +1432,10 @@ async def prune_staged_events_in_room( if room_version.event_format == EventFormatVersions.V1: for prev_event_tuple in prev_events: - if not isinstance(prev_event_tuple, list) or len(prev_events) != 2: + if ( + not isinstance(prev_event_tuple, list) + or len(prev_event_tuple) != 2 + ): logger.info("Invalid prev_events for %s", event_id) break