diff --git a/addons/web_calendar/static/src/js/calendar.js b/addons/web_calendar/static/src/js/calendar.js
index ae28c486f2c..e1e77173fd4 100644
--- a/addons/web_calendar/static/src/js/calendar.js
+++ b/addons/web_calendar/static/src/js/calendar.js
@@ -498,7 +498,7 @@ instance.web_calendar.CalendarView = instance.web.View.extend({
         var self = this;
         var index = this.dataset.get_id_index(event_id);
         if (index !== null) {
-            this.dataset.unlink(event_id);
+            this.dataset.unlink(this.dataset.ids[index]);
         }
     },
 });