1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/purge_events.py b/synapse/storage/databases/main/purge_events.py
index 3eb30944bf..91b0576b85 100644
--- a/synapse/storage/databases/main/purge_events.py
+++ b/synapse/storage/databases/main/purge_events.py
@@ -118,7 +118,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
 
         logger.info("[purge] looking for events to delete")
 
-        should_delete_expr = "state_key IS NULL"
+        should_delete_expr = "state_events.state_key IS NULL"
         should_delete_params: Tuple[Any, ...] = ()
         if not delete_local_events:
             should_delete_expr += " AND event_id NOT LIKE ?"