diff --git a/src/Eccube/Form/Type/PhoneNumberType.php b/src/Eccube/Form/Type/PhoneNumberType.php
index 3dc1f1f99db..caee56c7543 100644
--- a/src/Eccube/Form/Type/PhoneNumberType.php
+++ b/src/Eccube/Form/Type/PhoneNumberType.php
@@ -17,7 +17,6 @@
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\TelType;
 use Symfony\Component\Form\FormBuilderInterface;
-use Symfony\Component\OptionsResolver\Options;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\Validator\Constraints as Assert;
 
@@ -56,8 +55,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
      */
     public function configureOptions(OptionsResolver $resolver)
     {
-        $eccubeConfig = $this->eccubeConfig;
-        $constraints = function (Options $options) use ($eccubeConfig) {
+        $resolver->setNormalizer('constraints', function($options, $value) {
             $constraints = [];
             // requiredがtrueに指定されている場合, NotBlankを追加
             if (isset($options['required']) && true === $options['required']) {
@@ -65,7 +63,7 @@ public function configureOptions(OptionsResolver $resolver)
             }
 
             $constraints[] = new Assert\Length([
-                'max' => $eccubeConfig['eccube_tel_len_max'],
+                'max' => $this->eccubeConfig['eccube_tel_len_max'],
             ]);
 
             $constraints[] = new Assert\Type([
@@ -73,12 +71,10 @@ public function configureOptions(OptionsResolver $resolver)
                 'message' => 'form_error.numeric_only',
             ]);
 
-            return $constraints;
-        };
+            return array_merge($constraints, $value);
+        });
 
         $resolver->setDefaults([
-            'options' => ['constraints' => []],
-            'constraints' => $constraints,
             'attr' => [
                 'placeholder' => 'common.phone_number_sample',
             ],
diff --git a/tests/Eccube/Tests/Form/Type/Admin/OrderTypeTest.php b/tests/Eccube/Tests/Form/Type/Admin/OrderTypeTest.php
index f7479037470..ed094d5a2a5 100644
--- a/tests/Eccube/Tests/Form/Type/Admin/OrderTypeTest.php
+++ b/tests/Eccube/Tests/Form/Type/Admin/OrderTypeTest.php
@@ -162,4 +162,11 @@ public function testInValidChargeHasMinus()
         $this->form->submit($this->formData);
         $this->assertFalse($this->form->isValid());
     }
+
+    public function testInvalidPhoneNumberTooLong() {
+        $this->formData['phone_number'] = '0123456789012345';
+
+        $this->form->submit($this->formData);
+        $this->assertFalse($this->form['phone_number']->isValid());
+    }
 }