diff --git a/Type/CaptchaType.php b/Type/CaptchaType.php
index 17b4e2f..86d5ddb 100644
--- a/Type/CaptchaType.php
+++ b/Type/CaptchaType.php
@@ -7,6 +7,7 @@ use Symfony\Component\Form\FormView;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\OptionsResolver\OptionsResolverInterface;
 use Symfony\Component\Form\FormEvents;
 use Symfony\Component\Translation\TranslatorInterface;
@@ -122,12 +123,21 @@ class CaptchaType extends AbstractType
     /**
      * {@inheritdoc}
      */
-    public function setDefaultOptions(OptionsResolverInterface $resolver)
+    public function configureOptions(OptionsResolver $resolver)
     {
         $this->options['mapped'] = false;
         $resolver->setDefaults($this->options);
     }
 
+    /**
+     * {@inheritdoc}
+     * BC for SF < 2.7
+     */
+    public function setDefaultOptions(OptionsResolverInterface $resolver)
+    {
+        $this->configureOptions($resolver);
+    }
+
     /**
      * @return string
      */