diff --git a/src/Symfony/Component/Form/CHANGELOG.md b/src/Symfony/Component/Form/CHANGELOG.md
index 08f1aec42f..b315af5cbc 100644
--- a/src/Symfony/Component/Form/CHANGELOG.md
+++ b/src/Symfony/Component/Form/CHANGELOG.md
@@ -28,6 +28,8 @@ CHANGELOG
  * added an optional PropertyAccessorInterface parameter to FormType,
    ObjectChoiceList and PropertyPathMapper
  * [BC BREAK] PropertyPathMapper and FormType now have a constructor
+ * [BC BREAK] setting the option "validation_groups" to ``false`` now disables validation
+   instead of assuming group "Default"
 
 2.1.0
 -----
diff --git a/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php b/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
index cf5713058d..7c5e6784ae 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Type/BaseValidatorExtension.php
@@ -30,6 +30,10 @@ abstract class BaseValidatorExtension extends AbstractTypeExtension
     {
         // Make sure that validation groups end up as null, closure or array
         $validationGroupsNormalizer = function (Options $options, $groups) {
+            if (false === $groups) {
+                return array();
+            }
+
             if (empty($groups)) {
                 return null;
             }
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
index 14accc9a3d..ce5035717d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php
@@ -170,6 +170,51 @@ class FormValidatorTest extends \PHPUnit_Framework_TestCase
         $this->validator->validate($form, new Form());
     }
 
+    public function testDontValidateIfNoValidationGroups()
+    {
+        $context = $this->getMockExecutionContext();
+        $object = $this->getMock('\stdClass');
+
+        $form = $this->getBuilder('name', '\stdClass', array(
+                'validation_groups' => array(),
+            ))
+            ->setData($object)
+            ->getForm();
+
+        $form->setData($object);
+
+        $context->expects($this->never())
+            ->method('validate');
+
+        $this->validator->initialize($context);
+        $this->validator->validate($form, new Form());
+    }
+
+    public function testDontValidateConstraintsIfNoValidationGroups()
+    {
+        $context = $this->getMockExecutionContext();
+        $object = $this->getMock('\stdClass');
+        $constraint1 = $this->getMock('Symfony\Component\Validator\Constraint');
+        $constraint2 = $this->getMock('Symfony\Component\Validator\Constraint');
+
+        $options = array(
+            'validation_groups' => array(),
+            'constraints' => array($constraint1, $constraint2),
+        );
+        $form = $this->getBuilder('name', '\stdClass', $options)
+            ->setData($object)
+            ->getForm();
+
+        // Launch transformer
+        $form->bind(array());
+
+        $context->expects($this->never())
+            ->method('validate');
+
+        $this->validator->initialize($context);
+        $this->validator->validate($form, new Form());
+    }
+
     public function testDontValidateIfNotSynchronized()
     {
         $context = $this->getMockExecutionContext();
@@ -209,6 +254,46 @@ class FormValidatorTest extends \PHPUnit_Framework_TestCase
         $this->validator->validate($form, new Form());
     }
 
+    public function testAddInvalidErrorEvenIfNoValidationGroups()
+    {
+        $context = $this->getMockExecutionContext();
+        $object = $this->getMock('\stdClass');
+
+        $form = $this->getBuilder('name', '\stdClass', array(
+                'invalid_message' => 'invalid_message_key',
+                // Invalid message parameters must be supported, because the
+                // invalid message can be a translation key
+                // see https://github.com/symfony/symfony/issues/5144
+                'invalid_message_parameters' => array('{{ foo }}' => 'bar'),
+                'validation_groups' => array(),
+            ))
+            ->setData($object)
+            ->addViewTransformer(new CallbackTransformer(
+                    function ($data) { return $data; },
+                    function () { throw new TransformationFailedException(); }
+                ))
+            ->getForm();
+
+        // Launch transformer
+        $form->bind('foo');
+
+        $context->expects($this->never())
+            ->method('validate');
+
+        $context->expects($this->once())
+            ->method('addViolation')
+            ->with(
+                'invalid_message_key',
+                array('{{ value }}' => 'foo', '{{ foo }}' => 'bar'),
+                'foo'
+            );
+        $context->expects($this->never())
+            ->method('addViolationAt');
+
+        $this->validator->initialize($context);
+        $this->validator->validate($form, new Form());
+    }
+
     public function testDontValidateConstraintsIfNotSynchronized()
     {
         $context = $this->getMockExecutionContext();
diff --git a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
index 13faefe956..094a26853b 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Validator/Type/FormTypeValidatorExtensionTest.php
@@ -40,6 +40,15 @@ class FormTypeValidatorExtensionTest extends TypeTestCase
         $this->assertEquals(array('group1', 'group2'), $form->getConfig()->getOption('validation_groups'));
     }
 
+    public function testValidationGroupsCanBeSetToFalse()
+    {
+        $form = $this->factory->create('form', null, array(
+                'validation_groups' => false,
+            ));
+
+        $this->assertEquals(array(), $form->getConfig()->getOption('validation_groups'));
+    }
+
     public function testValidationGroupsCanBeSetToCallback()
     {
         $form = $this->factory->create('form', null, array(