diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index 710f732945..9e5295ddb8 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -554,7 +554,8 @@ var et2_calendar_event = /** @class */ (function (_super) {
         var vc_event = 'click.calendar_videoconference';
         jQuery('body').off(vc_event)
             .on(vc_event, '[data-videoconference]', function (event) {
-            app.calendar.joinVideoConference(this.dataset.videoconference, this.dataset);
+            var data = egw.dataGetUIDdata("calendar::" + this.dataset.id);
+            app.calendar.joinVideoConference(this.dataset.videoconference, data.data || this.dataset);
         });
     };
     /**
diff --git a/calendar/js/et2_widget_event.ts b/calendar/js/et2_widget_event.ts
index 423a9e761b..b6a843bfef 100644
--- a/calendar/js/et2_widget_event.ts
+++ b/calendar/js/et2_widget_event.ts
@@ -704,7 +704,8 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 		let vc_event = 'click.calendar_videoconference';
 		jQuery('body').off(vc_event)
 			.on(vc_event, '[data-videoconference]',function(event) {
-				app.calendar.joinVideoConference(this.dataset.videoconference, this.dataset);
+				let data = egw.dataGetUIDdata("calendar::"+this.dataset.id);
+				app.calendar.joinVideoConference(this.dataset.videoconference, data.data||this.dataset);
 			});
 	}
 	/**