diff --git a/calendar/js/et2_widget_daycol.ts b/calendar/js/et2_widget_daycol.ts
index 18a642c74d..1233088640 100644
--- a/calendar/js/et2_widget_daycol.ts
+++ b/calendar/js/et2_widget_daycol.ts
@@ -1135,7 +1135,7 @@ export class et2_calendar_daycol extends et2_valueWidget implements et2_IDetache
 					minute: _ev.target.dataset.minute || 0,
 					owner: this.options.owner
 				};
-				app.calendar.add(options);
+				this.getInstanceManager().app_obj.calendar.add(options);
 				return false;
 			}
 			// Header, all day non-blocking
@@ -1151,14 +1151,14 @@ export class et2_calendar_daycol extends et2_valueWidget implements et2_IDetache
 					non_blocking: true,
 					owner: this.options.owner
 				};
-				app.calendar.add(options);
+				this.getInstanceManager().app_obj.calendar.add(options);
 				return false;
 			}
 		}
 		// Day label
 		else if(this.title.is(_ev.target) || this.title.has(_ev.target).length)
 		{
-			app.calendar.update_state({view: 'day',date: this.date.toJSON()});
+			this.getInstanceManager().app_obj.calendar.update_state({view: 'day', date: this.date.toJSON()});
 			return false;
 		}