diff --git a/addons/web_calendar/static/src/js/web_calendar.js b/addons/web_calendar/static/src/js/web_calendar.js
index ad49ff9a9b1daaa882b755135ffeaf69dedb4730..e75806bb8e493abc8f7ccbc4f750f4d476c2907d 100644
--- a/addons/web_calendar/static/src/js/web_calendar.js
+++ b/addons/web_calendar/static/src/js/web_calendar.js
@@ -657,17 +657,13 @@ openerp.web_calendar = function(instance) {
                     date_start_day = new Date(event.start.getFullYear(),event.start.getMonth(),event.start.getDate(),7);
                     date_stop_day = new Date(event_end.getFullYear(),event_end.getMonth(),event_end.getDate(),19);
                 }
-                data[this.date_start] = instance.web.parse_value(date_start_day, this.fields[this.date_start]);
-                if (this.date_stop) {
-                    data[this.date_stop] = instance.web.parse_value(date_stop_day, this.fields[this.date_stop]);
-                }
                 diff_seconds = Math.round((date_stop_day.getTime() - date_start_day.getTime()) / 1000);
                                 
             }
             else {
-                data[this.date_start] = instance.web.parse_value(event.start, this.fields[this.date_start]);
+                data[this.date_start] = event.start;
                 if (this.date_stop) {
-                    data[this.date_stop] = instance.web.parse_value(event_end, this.fields[this.date_stop]);
+                    data[this.date_stop] = event_end;
                 }
                 diff_seconds = Math.round((event_end.getTime() - event.start.getTime()) / 1000);
             }