diff --git a/basic/srv/vm/mgr/appmgr.py b/basic/srv/vm/mgr/appmgr.py
index 01f442e..d953dc3 100644
--- a/basic/srv/vm/mgr/appmgr.py
+++ b/basic/srv/vm/mgr/appmgr.py
@@ -99,7 +99,7 @@ class AppMgr:
         if not tools.is_service_started(item.app):
             self.vmmgr.start_app(item.app)
 
-    def stop_app(self, app):
+    def stop_app(self, item):
         if tools.is_service_started(item.app):
             self.vmmgr.stop_app(item.app)