diff --git a/resources/js/Pages/VacationRequest/Create.vue b/resources/js/Pages/VacationRequest/Create.vue
index 499234d..b990620 100644
--- a/resources/js/Pages/VacationRequest/Create.vue
+++ b/resources/js/Pages/VacationRequest/Create.vue
@@ -349,7 +349,7 @@ const props = defineProps({
 
 const form = useForm({
   user: props.can.createOnBehalfOfEmployee
-    ? props.users.data.find(user => user.id === (props.vacationUserId ?? props.auth.user.id)) ?? props.users.data[0]
+    ? props.users.data.find(user => user.id === (checkUserId(props.vacationUserId) ?? props.auth.user.id)) ?? props.users.data[0]
     : props.auth.user,
   from: props.vacationFromDate,
   to: props.vacationFromDate,
@@ -427,6 +427,10 @@ function resetForm() {
   estimatedDays.value = []
 }
 
+function checkUserId(userId) {
+  return userId > 0 ? userId: null
+}
+
 async function refreshEstimatedDays(from, to) {
   if (from && to) {
     const res = await axios.post('/api/vacation/calculate-days', { from, to })