diff --git a/aleksis/apps/alsijil/assets/components/coursebook/LessonDocumentations.vue b/aleksis/apps/alsijil/assets/components/coursebook/LessonDocumentations.vue
index 6731bfb39fda946bffa4a21b91d2b3fa26faba68..3d5e5f1f91771b373dbc2cccc63121e6c3f00bf8 100644
--- a/aleksis/apps/alsijil/assets/components/coursebook/LessonDocumentations.vue
+++ b/aleksis/apps/alsijil/assets/components/coursebook/LessonDocumentations.vue
@@ -11,8 +11,8 @@
             :items="emptyLessonPeriods"
             label="Choose week"
             :item-text="getWeekText"
-            item-value="datetimeStart"
             v-model="selectedLessonPeriodDatetime"
+            return-object
           ></v-select>
           <v-select
             v-else