diff --git a/addons/calendar/static/src/js/base_calendar.js b/addons/calendar/static/src/js/base_calendar.js
index 3752b7aa94a..e09222b6025 100644
--- a/addons/calendar/static/src/js/base_calendar.js
+++ b/addons/calendar/static/src/js/base_calendar.js
@@ -40,8 +40,10 @@ var CalendarNotification = Notification.extend({
             },
 
             'click .link2showed': function() {
-                this.destroy(true);
-                this._rpc({route: '/calendar/notify_ack'});
+                var self = this;
+                this._rpc({route: '/calendar/notify_ack'}).always(function() {
+                    self.destroy();
+                });
             },
         });
     },