diff --git a/frontend/src/views/DiaryView.vue b/frontend/src/views/DiaryView.vue
index 6e8ba38a..9b64cfd7 100644
--- a/frontend/src/views/DiaryView.vue
+++ b/frontend/src/views/DiaryView.vue
@@ -2242,15 +2242,17 @@ export default {
             }
         },
         async onDragEnd(evt) {
-            const movedItem = this.trainingPlan[evt.oldIndex];
+            const oldIndex = Number.isInteger(evt.oldDraggableIndex) ? evt.oldDraggableIndex : evt.oldIndex;
+            const newIndex = Number.isInteger(evt.newDraggableIndex) ? evt.newDraggableIndex : evt.newIndex;
+            const movedItem = this.trainingPlan[oldIndex];
             if (!movedItem) {
                 return;
             }
             try {
                 await apiClient.put(`/diary-date-activities/${this.currentClub}/${movedItem.id}/order`, {
-                    orderId: evt.newIndex
+                    orderId: newIndex + 1
                 });
-                this.recalculateTimes();
+                await this.loadTrainingPlan();
             } catch (error) {
                 this.showInfo(this.$t('messages.error'), this.$t('diary.errorOccurred'), '', 'error');
             }