diff --git a/calendar/js/app.js b/calendar/js/app.js
index 2b93700e41..ec2f1ab14a 100644
--- a/calendar/js/app.js
+++ b/calendar/js/app.js
@@ -939,7 +939,8 @@ app.classes.calendar = AppJS.extend(
 		var whole_day = this.et2.getWidgetById('whole_day').get_value();
 		var button = _button;
 		var that = this;
-		if (typeof content != 'undefined' && typeof content.recur_type != 'undefined' && content.recur_type != null)
+		if (typeof content != 'undefined' && typeof content.recur_type != 'undefined' 
+				&& content.recur_type != null && content.id != null)
 		{
 			if (content.start != start_date || content.whole_day.toString() != whole_day)
 			{