1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/replication/slave/storage/_base.py b/synapse/replication/slave/storage/_base.py
index b962641166..61f5590c53 100644
--- a/synapse/replication/slave/storage/_base.py
+++ b/synapse/replication/slave/storage/_base.py
@@ -25,7 +25,7 @@ logger = logging.getLogger(__name__)
 
 class BaseSlavedStore(SQLBaseStore):
     def __init__(self, db_conn, hs):
-        super(BaseSlavedStore, self).__init__(hs)
+        super(BaseSlavedStore, self).__init__(db_conn, hs)
         if isinstance(self.database_engine, PostgresEngine):
             self._cache_id_gen = SlavedIdTracker(
                 db_conn, "cache_invalidation_stream", "stream_id",