1 files changed, 4 insertions, 0 deletions
diff --git a/synapse/storage/events_worker.py b/synapse/storage/events_worker.py
index f63810a8c7..79680ee856 100644
--- a/synapse/storage/events_worker.py
+++ b/synapse/storage/events_worker.py
@@ -640,6 +640,10 @@ class EventsWorkerStore(SQLBaseStore):
             # we choose to ignore redactions of m.room.create events.
             return None
 
+        if original_ev.type == "m.room.redaction":
+            # ... and redaction events
+            return None
+
         redaction_map = yield self._get_events_from_cache_or_db(redactions)
 
         for redaction_id in redactions: