diff --git a/frontend/src/views/DiaryView.vue b/frontend/src/views/DiaryView.vue
index 498ca373..de568f82 100644
--- a/frontend/src/views/DiaryView.vue
+++ b/frontend/src/views/DiaryView.vue
@@ -2756,11 +2756,7 @@ export default {
             return `${item.duration || ''}${item.durationText && item.durationText.trim() !== '' ? ` (${item.durationText})` : ''}`;
         },
         getPlanDurationMinutesDisplay(item) {
-            const duration = Number(item?.duration);
-            if (!Number.isFinite(duration) || duration <= 0) {
-                return '';
-            }
-            return `${duration} ${this.$t('diary.minutes')}`;
+            return typeof item?.durationText === 'string' ? item.durationText.trim() : '';
         },
         getTimeblockMaxGroupDuration(timeblockItem) {
             const entries = Array.isArray(timeblockItem?.groupActivities) ? timeblockItem.groupActivities : [];