diff --git a/app/javascript/dashboard/modules/contact/components/ContactDropdownItem.vue b/app/javascript/dashboard/modules/contact/components/ContactDropdownItem.vue
index c4467c75f..ecee39509 100644
--- a/app/javascript/dashboard/modules/contact/components/ContactDropdownItem.vue
+++ b/app/javascript/dashboard/modules/contact/components/ContactDropdownItem.vue
@@ -47,8 +47,8 @@ export default {
       default: '',
     },
     identifier: {
-      type: String,
-      default: '',
+      type: [String, Number],
+      required: true,
     },
   },
 };