diff --git a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
index 71bceb36b7ae..102838d80c5d 100644
--- a/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/CallbackValidator.php
@@ -45,7 +45,7 @@ public function isValid($object, Constraint $constraint)
         $propertyPath = $context->getPropertyPath();
 
         foreach ($methods as $method) {
-            if (is_array($method)) {
+            if (is_array($method) || $method instanceof \Closure) {
                 if (!is_callable($method)) {
                     throw new ConstraintDefinitionException(sprintf('"%s::%s" targeted by Callback constraint is not a valid callable', $method[0], $method[1]));
                 }