diff --git a/calendar/js/app.js b/calendar/js/app.js
index 24fa599120..3ff69c4da1 100644
--- a/calendar/js/app.js
+++ b/calendar/js/app.js
@@ -1709,11 +1709,15 @@ app.classes.calendar = (function(){ "use strict"; return AppJS.extend(
 				else if (template)
 				{
 					// Open conflicts
-					var data = jQuery.extend({},template.widgetContainer.getArrayMgr('content').data, app.calendar.quick_add);
+					var data = jQuery.extend(
+						{menuaction: 'calendar.calendar_uiforms.ajax_conflicts'},
+						template.widgetContainer.getArrayMgr('content').data,
+						app.calendar.quick_add
+					);
 
 					egw.openPopup(
 						egw.link(
-							'/index.php?menuaction=calendar.calendar_uiforms.ajax_conflicts',
+							'/index.php',
 							data
 						),
 						850, 300,