diff --git a/src/modules/03_recruiting/views/01_compete/PeriodAdd.vue b/src/modules/03_recruiting/views/01_compete/PeriodAdd.vue
index ee71ba1dc..8cab7895c 100644
--- a/src/modules/03_recruiting/views/01_compete/PeriodAdd.vue
+++ b/src/modules/03_recruiting/views/01_compete/PeriodAdd.vue
@@ -648,6 +648,7 @@ onMounted(async () => {
                     dateAnnounce != null ? date2Thai(dateAnnounce) : null
                   "
                   :label="`${'วันประกาศผลสอบ'}`"
+                  :rules="[(val:string) => !!val || `${'กรุณาเลือกวันประกาศผลสอบ'}`]"
                 >
                   <template v-slot:prepend>
                     <q-icon