diff --git a/addons/web_calendar/static/src/js/web_calendar.js b/addons/web_calendar/static/src/js/web_calendar.js
index 46f8ee1b1b3..f9d108b90f7 100644
--- a/addons/web_calendar/static/src/js/web_calendar.js
+++ b/addons/web_calendar/static/src/js/web_calendar.js
@@ -1026,7 +1026,7 @@ openerp.web_calendar = function(instance) {
         
         slow_add: function() {
             var val = this.$input.val();
-            this.slow_create({'name': val});
+            this.slow_create(_.isEmpty(val) ? {} : {'name': val});
         },
 
         /**