diff --git a/synapse/storage/schema/delta/25/fts.py b/synapse/storage/schema/delta/25/fts.py
index 056487af30..b7cd0ce3b8 100644
--- a/synapse/storage/schema/delta/25/fts.py
+++ b/synapse/storage/schema/delta/25/fts.py
@@ -55,7 +55,7 @@ CREATE INDEX event_search_ev_ridx ON event_search(room_id);
 
 SQLITE_TABLE = (
     "CREATE VIRTUAL TABLE IF NOT EXISTS event_search"
-    " USING fts4 ( event_id, room_id, key, value )"
+    " USING fts4 ( event_id, room_id, sender, key, value )"
 )