diff --git a/addons/calendar/static/src/js/base_calendar.js b/addons/calendar/static/src/js/base_calendar.js
index 7e92f23f181..4f9b43ddc70 100644
--- a/addons/calendar/static/src/js/base_calendar.js
+++ b/addons/calendar/static/src/js/base_calendar.js
@@ -210,7 +210,7 @@ WebClient.include({
     get_next_notif: function() {
         var self = this;
 
-        this.rpc("/calendar/notify")
+        this.rpc("/calendar/notify", {}, {shadow: true})
         .done(function(result) {
             _.each(result, function(res) {
                 setTimeout(function() {