diff --git a/rhodecode/lib/celerylib/__init__.py b/rhodecode/lib/celerylib/__init__.py
--- a/rhodecode/lib/celerylib/__init__.py
+++ b/rhodecode/lib/celerylib/__init__.py
@@ -112,7 +112,7 @@ def get_session():
     if CELERY_ON:
         engine = engine_from_config(config, 'sqlalchemy.db1.')
         init_model(engine)
-    sa = meta.Session
+    sa = meta.Session()
     return sa