diff --git a/aleksis/apps/kolego/frontend/components/AbsenceReasonButtons.vue b/aleksis/apps/kolego/frontend/components/AbsenceReasonButtons.vue
index 3a13dd7d19a7ebe0d41474eecf2a3ad4357274cb..66ace3e69e81717fb613a2eafbee0a7f9b386204 100644
--- a/aleksis/apps/kolego/frontend/components/AbsenceReasonButtons.vue
+++ b/aleksis/apps/kolego/frontend/components/AbsenceReasonButtons.vue
@@ -29,7 +29,7 @@ export default {
     customAbsenceReasons: {
       type: Array,
       required: false,
-      default: [],
+      default: () => [],
     },
   },
   computed: {
diff --git a/aleksis/apps/kolego/frontend/components/AbsenceReasonGroupSelect.vue b/aleksis/apps/kolego/frontend/components/AbsenceReasonGroupSelect.vue
index 63976e117a4c4a3cc717d0362e51e90d00a994cd..ed44e7f0e11ca71684eb1ed98fa3c24885988237 100644
--- a/aleksis/apps/kolego/frontend/components/AbsenceReasonGroupSelect.vue
+++ b/aleksis/apps/kolego/frontend/components/AbsenceReasonGroupSelect.vue
@@ -47,7 +47,7 @@ export default {
     customAbsenceReasons: {
       type: Array,
       required: false,
-      default: [],
+      default: () => [],
     },
   },
   computed: {