diff --git a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
index dc825e1fa9..9c305e998c 100644
--- a/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
+++ b/src/Symfony/Component/Validator/Mapping/ClassMetadata.php
@@ -346,10 +346,6 @@ class ClassMetadata extends ElementMetadata implements ClassMetadataInterface
         }
 
         foreach ($source->getConstrainedProperties() as $property) {
-            if ($this->hasPropertyMetadata($property)) {
-                continue;
-            }
-
             foreach ($source->getPropertyMetadata($property) as $member) {
                 $member = clone $member;
 
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php
new file mode 100644
index 0000000000..38c82982b1
--- /dev/null
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCar.php
@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Fixtures;
+
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+use Symfony\Component\Validator\Constraints\Length;
+
+class EntityStaticCar extends EntityStaticVehicle
+{
+    public static function loadValidatorMetadata(ClassMetadata $metadata)
+    {
+        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+    }
+}
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php
new file mode 100644
index 0000000000..83f192e7bd
--- /dev/null
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticCarTurbo.php
@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Fixtures;
+
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+use Symfony\Component\Validator\Constraints\Length;
+
+class EntityStaticCarTurbo extends EntityStaticCar
+{
+    public static function loadValidatorMetadata(ClassMetadata $metadata)
+    {
+        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+    }
+}
diff --git a/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php
new file mode 100644
index 0000000000..41e616b03f
--- /dev/null
+++ b/src/Symfony/Component/Validator/Tests/Fixtures/EntityStaticVehicle.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Validator\Tests\Fixtures;
+
+use Symfony\Component\Validator\Mapping\ClassMetadata;
+use Symfony\Component\Validator\Constraints\Length;
+
+class EntityStaticVehicle
+{
+    public $wheels;
+
+    public static function loadValidatorMetadata(ClassMetadata $metadata)
+    {
+        $metadata->addPropertyConstraint('wheels', new Length(array('max' => 99)));
+    }
+}
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php b/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
index 99b15aa9a4..51b5a09802 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/ClassMetadataTest.php
@@ -12,7 +12,6 @@
 namespace Symfony\Component\Validator\Tests\Mapping;
 
 use Symfony\Component\Validator\Constraint;
-use Symfony\Component\Validator\Constraints\GreaterThan;
 use Symfony\Component\Validator\Constraints\Valid;
 use Symfony\Component\Validator\Mapping\ClassMetadata;
 use Symfony\Component\Validator\Tests\Fixtures\ConstraintA;
@@ -304,21 +303,6 @@ class ClassMetadataTest extends \PHPUnit_Framework_TestCase
     {
         $this->assertCount(0, $this->metadata->getPropertyMetadata('foo'), '->getPropertyMetadata() returns an empty collection if no metadata is configured for the given property');
     }
-
-    public function testMergeDoesOverrideConstraintsFromParentClassIfPropertyIsOverriddenInChildClass()
-    {
-        $parentMetadata = new ClassMetadata('\Symfony\Component\Validator\Tests\Mapping\ParentClass');
-        $parentMetadata->addPropertyConstraint('example', new GreaterThan(0));
-
-        $childMetadata = new ClassMetadata('\Symfony\Component\Validator\Tests\Mapping\ChildClass');
-        $childMetadata->addPropertyConstraint('example', new GreaterThan(1));
-        $childMetadata->mergeConstraints($parentMetadata);
-
-        $expectedMetadata = new ClassMetadata('\Symfony\Component\Validator\Tests\Mapping\ChildClass');
-        $expectedMetadata->addPropertyConstraint('example', new GreaterThan(1));
-
-        $this->assertEquals($expectedMetadata, $childMetadata);
-    }
 }
 
 class ParentClass
diff --git a/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php b/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
index 9696744166..400c39ce4c 100644
--- a/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
+++ b/src/Symfony/Component/Validator/Tests/Mapping/Factory/LazyLoadingMetadataFactoryTest.php
@@ -168,6 +168,25 @@ class LazyLoadingMetadataFactoryTest extends \PHPUnit_Framework_TestCase
 
         $metadata = $factory->getMetadataFor(self::CLASS_NAME);
     }
+
+    public function testGroupsFromParent()
+    {
+        $reader = new \Symfony\Component\Validator\Mapping\Loader\StaticMethodLoader();
+        $factory = new LazyLoadingMetadataFactory($reader);
+        $metadata = $factory->getMetadataFor('Symfony\Component\Validator\Tests\Fixtures\EntityStaticCarTurbo');
+        $groups = array();
+
+        foreach ($metadata->getPropertyMetadata('wheels') as $propertyMetadata) {
+            $constraints = $propertyMetadata->getConstraints();
+            $groups = array_replace($groups, $constraints[0]->groups);
+        }
+
+        $this->assertCount(4, $groups);
+        $this->assertContains('Default', $groups);
+        $this->assertContains('EntityStaticCarTurbo', $groups);
+        $this->assertContains('EntityStaticCar', $groups);
+        $this->assertContains('EntityStaticVehicle', $groups);
+    }
 }
 
 class TestLoader implements LoaderInterface