diff --git a/addons/web/static/src/js/views/calendar/calendar_renderer.js b/addons/web/static/src/js/views/calendar/calendar_renderer.js
index f011a24a32e..6283a3539f3 100644
--- a/addons/web/static/src/js/views/calendar/calendar_renderer.js
+++ b/addons/web/static/src/js/views/calendar/calendar_renderer.js
@@ -355,7 +355,7 @@ return AbstractRenderer.extend({
             },
             // Dirty hack to ensure a correct first render
             eventAfterAllRender: function () {
-                window.dispatchEvent(new Event('resize'));
+                $(window).trigger('resize');
             },
             viewRender: function (view) {
                 // compute mode from view.name which is either 'month', 'agendaWeek' or 'agendaDay'