diff --git a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
index 3ff36b97277d5..644b6433d4bd1 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
@@ -29,6 +29,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
         if ($options['allow_add'] && $options['prototype']) {
             $prototype = $builder->create($options['prototype_name'], $options['type'], array_replace(array(
                 'label' => $options['prototype_name'] . 'label__',
+                'data' => $options['prototype_data'],
             ), $options['options']));
             $builder->setAttribute('prototype', $prototype->getForm());
         }
@@ -84,6 +85,7 @@ public function setDefaultOptions(OptionsResolverInterface $resolver)
             'allow_delete'   => false,
             'prototype'      => true,
             'prototype_name' => '__name__',
+            'prototype_data' => null,
             'type'           => 'text',
             'options'        => array(),
         ));
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
index 15896dae22f37..c223e3d124d97 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/Type/CollectionTypeTest.php
@@ -197,4 +197,16 @@ public function testPrototypeDefaultLabel()
 
         $this->assertSame('__test__label__', $form->createView()->vars['prototype']->vars['label']);
     }
+
+    public function testPrototypeData()
+    {
+        $form = $this->factory->create('collection', array(), array(
+            'type'      => 'form',
+            'allow_add' => true,
+            'prototype' => true,
+            'prototype_data' => $data = 'foobar',
+        ));
+
+        $this->assertEquals($data, $form->getConfig()->getAttribute('prototype')->getData());
+    }
 }