diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index cb04bd2e00..b1d05b523f 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -403,12 +403,12 @@ var et2_calendar_event = /** @class */ (function (_super) {
         if (this.options.value.category) {
             var cat = et2_createWidget('select-cat', { 'readonly': true }, this);
             cat.set_value(this.options.value.category);
-            var cat_label_1 = this.options.value.category.indexOf(',') <= 0 ? cat.span.text() : [];
-            if (typeof cat_label_1 != 'string') {
+            cat_label = this.options.value.category.indexOf(',') <= 0 ? cat.span.text() : [];
+            if (typeof cat_label != 'string') {
                 cat.span.children().each(function () {
-                    cat_label_1.push(jQuery(this).text());
+                    cat_label.push(jQuery(this).text());
                 });
-                cat_label_1 = cat_label_1.join(', ');
+                cat_label = cat_label.join(', ');
             }
             cat.destroy();
         }
diff --git a/calendar/js/et2_widget_event.ts b/calendar/js/et2_widget_event.ts
index 0ebbd749fb..b5f55fcf07 100644
--- a/calendar/js/et2_widget_event.ts
+++ b/calendar/js/et2_widget_event.ts
@@ -511,12 +511,12 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 			'<span class="calendar_calEventLabel">' + this.egw().lang('Time') + '</span>:' + timespan :
 			'<span class="calendar_calEventLabel">' + this.egw().lang('Start') + '</span>:' + start + ' ' +
 			'<span class="calendar_calEventLabel">' + this.egw().lang('End') + '</span>:' + end;
-		let cat_label = '';
+		let cat_label: (string | string[]) = '';
 		if(this.options.value.category)
 		{
 			const cat = et2_createWidget('select-cat', {'readonly': true}, this);
 			cat.set_value(this.options.value.category);
-			let cat_label : (string | string[]) = this.options.value.category.indexOf(',') <= 0 ? cat.span.text() : [];
+			cat_label = this.options.value.category.indexOf(',') <= 0 ? cat.span.text() : [];
 			if(typeof cat_label != 'string')
 			{
 				cat.span.children().each(function() {