diff --git a/rbac/init.py b/rbac/init.py
index d37ec09..724c2b7 100644
--- a/rbac/init.py
+++ b/rbac/init.py
@@ -65,7 +65,7 @@ def _bind_rbac_events(dbpools, dbname, up):
 		debug(f'RBAC event bound: {event_name}')
 
 
-async def start_cache_sync():
+async def start_cache_sync(app):
 	"""Start cache_sync and register RBAC reload callbacks."""
 	env = ServerEnv()
 	cache_sync = get_cache_sync()