diff --git a/src/Skobkin/Bundle/CopyPasteBundle/Form/FakeCaptchaType.php b/src/Skobkin/Bundle/CopyPasteBundle/Form/FakeCaptchaType.php
index 5ec60cb..58a4c4b 100644
--- a/src/Skobkin/Bundle/CopyPasteBundle/Form/FakeCaptchaType.php
+++ b/src/Skobkin/Bundle/CopyPasteBundle/Form/FakeCaptchaType.php
@@ -3,6 +3,7 @@
 namespace Skobkin\Bundle\CopyPasteBundle\Form;
 
 use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\HiddenType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
@@ -22,6 +23,16 @@ class FakeCaptchaType extends AbstractType
 
     public function getParent()
     {
-        return 'hidden';
+        return HiddenType::class;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getBlockPrefix()
+    {
+        return 'copypaste_fake_captcha';
+    }
+
+
 }
diff --git a/src/Skobkin/Bundle/CopyPasteBundle/Resources/views/Form/fields.html.twig b/src/Skobkin/Bundle/CopyPasteBundle/Resources/views/Form/fields.html.twig
index 18311b4..dec8ba7 100644
--- a/src/Skobkin/Bundle/CopyPasteBundle/Resources/views/Form/fields.html.twig
+++ b/src/Skobkin/Bundle/CopyPasteBundle/Resources/views/Form/fields.html.twig
@@ -1,4 +1,4 @@
-{% block skobkin_fake_captcha_widget %}
+{% block copypaste_fake_captcha_widget %}
     {% spaceless %}
         <div id="{{ form.vars.id }}"></div>
         <script type="text/javascript">