diff --git a/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php b/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
index 4befc03e71..bd659421cf 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Constraints/FormValidator.php
@@ -53,7 +53,7 @@ class FormValidator extends ConstraintValidator
             // Validate the form data only if transformation succeeded
             $path = $this->context->getPropertyPath();
             $graphWalker = $this->context->getGraphWalker();
-            $groups = $this->getValidationGroups($form);
+            $groups = self::getValidationGroups($form);
 
             if (!empty($path)) {
                 $path .= '.';
@@ -126,7 +126,7 @@ class FormValidator extends ConstraintValidator
      *
      * @return Boolean Whether the graph walker may walk the data.
      */
-    private function allowDataWalking(FormInterface $form)
+    private static function allowDataWalking(FormInterface $form)
     {
         $data = $form->getData();
 
@@ -158,7 +158,7 @@ class FormValidator extends ConstraintValidator
      *
      * @return array The validation groups.
      */
-    private function getValidationGroups(FormInterface $form)
+    private static function getValidationGroups(FormInterface $form)
     {
         do {
             $groups = $form->getConfig()->getOption('validation_groups');