diff --git a/views/ngXosLib/xosHelpers/src/services/rest/Truckroll.js b/views/ngXosLib/xosHelpers/src/services/rest/Truckroll.js
index 7f1f9b5..e7a631e 100644
--- a/views/ngXosLib/xosHelpers/src/services/rest/Truckroll.js
+++ b/views/ngXosLib/xosHelpers/src/services/rest/Truckroll.js
@@ -1,11 +1,13 @@
-'use strict';
+(function() {
+  'use strict';
 
-/*
- * Virtual Truckroll, enable to perform basic test on user connectivity such as ping, traceroute and tcpdump.
+  /*
+   * Virtual Truckroll, enable to perform basic test on user connectivity such as ping, traceroute and tcpdump.
 
- */
+   */
 
-angular.module('xos.helpers')
-.service('Truckroll-Collection', function($resource){
-  return $resource('/api/tenant/truckroll/:truckroll_id/', { truckroll_id: '@id' });
-})
+  angular.module('xos.helpers')
+  .service('Truckroll-Collection', function($resource){
+    return $resource('/api/tenant/truckroll/:truckroll_id/', { truckroll_id: '@id' });
+  })
+})();
\ No newline at end of file