1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index a9a13a2658..4f97fd5ab6 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -379,7 +379,7 @@ class BackgroundUpdater(object):
             logger.debug("[SQL] %s", sql)
             c.execute(sql)
 
-        if isinstance(self.db.database_engine, engines.PostgresEngine):
+        if isinstance(self.db.engine, engines.PostgresEngine):
             runner = create_index_psql
         elif psql_only:
             runner = None