1 files changed, 2 insertions, 1 deletions
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index d604e7668f..349f96e24b 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -225,7 +225,8 @@ class DataStore(RoomMemberStore, RoomStore,
             db_conn.cursor(),
             name="_find_stream_orderings_for_times_txn",
             database_engine=self.database_engine,
-            after_callbacks=[]
+            after_callbacks=[],
+            final_callbacks=[],
         )
         self._find_stream_orderings_for_times_txn(cur)
         cur.close()