diff --git a/smartgears/smartgears/tasks/smartgears-app.yml b/smartgears/smartgears/tasks/smartgears-app.yml
index 8b2aeee9..f99f3e73 100644
--- a/smartgears/smartgears/tasks/smartgears-app.yml
+++ b/smartgears/smartgears/tasks/smartgears-app.yml
@@ -45,7 +45,7 @@
 - name: Stop the smartgears container before launching the upgrade script
   become: True
   become_user: '{{ smartgears_user }}'
-  shell: {{ smartgears_user_home }}/stopContainer.sh
+  shell: '{{ smartgears_user_home }}/stopContainer.sh'
   when:
     - smartgears_upgrade or ( smartgears_download | changed )
     - smartgears_stop_script.stat.exists