diff --git a/src/Eccube/Form/Type/Admin/MemberType.php b/src/Eccube/Form/Type/Admin/MemberType.php
index 906dcf6abe5..c97b163a84a 100755
--- a/src/Eccube/Form/Type/Admin/MemberType.php
+++ b/src/Eccube/Form/Type/Admin/MemberType.php
@@ -136,6 +136,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 $options['attr'] = [
                     'disabled' => 'disabled',
                 ];
+                $options['empty_data'] = $data->getLoginId();
                 $options['data'] = $data->getLoginId();
             }