diff --git a/addons/web_calendar/static/src/js/web_calendar.js b/addons/web_calendar/static/src/js/web_calendar.js
index 63066f7a861..c054a0148b0 100644
--- a/addons/web_calendar/static/src/js/web_calendar.js
+++ b/addons/web_calendar/static/src/js/web_calendar.js
@@ -806,7 +806,7 @@ openerp.web_calendar = function(instance) {
             var index = this.dataset.get_id_index(id);
             if (index !== null) {
                 event_id = this.dataset.ids[index];
-                this.dataset.write(event_id, data, {}).done(function() {
+                this.dataset.write(event_id, data, {}).always(function() {
                     if (is_virtual_id(event_id)) {
                         // this is a virtual ID and so this will create a new event
                         // with an unknown id for us.