diff --git a/calendar/js/app.ts b/calendar/js/app.ts
index 9330e5ccc4..74d77bb6ff 100644
--- a/calendar/js/app.ts
+++ b/calendar/js/app.ts
@@ -2055,7 +2055,7 @@ export class CalendarApp extends EgwApp
 		this.quick_add = options;
 
 		// Open dialog to use as target
-		let add_dialog = Et2Dialog.show_dialog(null, '', 'Add new event', null, [], Et2Dialog.PLAIN_MESSAGE, this.egw);
+		let add_dialog = Et2Dialog.show_dialog(null, '', 'Add new event', null, [], Et2Dialog.PLAIN_MESSAGE, "", this.egw);
 		add_dialog.id = "quick_add";
 		// Position by the event
 		if(event)
diff --git a/calendar/js/et2_widget_event.ts b/calendar/js/et2_widget_event.ts
index 7a9d15c2e8..e36354e4f2 100644
--- a/calendar/js/et2_widget_event.ts
+++ b/calendar/js/et2_widget_event.ts
@@ -1362,7 +1362,8 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 						},
 						(!event_data.is_private ? event_data['title'] : egw.lang('private')) + "\n" +
 						egw.lang("Do you want to edit this event as an exception or the whole series?"),
-						"This event is part of a series", {}, buttons, Et2Dialog.QUESTION_MESSAGE
+						"This event is part of a series", {}, buttons, Et2Dialog.QUESTION_MESSAGE,
+						"", egw
 					);
 				}
 				else