diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index 8a19f82a2d..de229064d5 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -895,7 +895,7 @@ class Form implements \IteratorAggregate, FormInterface
         $child->setParent($this);
 
         if (!$this->lockSetData && $this->defaultDataSet && !$this->config->getInheritData()) {
-            $iterator = new InheritDataAwareIterator(new \ArrayIterator(array($child)));
+            $iterator = new InheritDataAwareIterator(new \ArrayIterator(array($child->getName() => $child)));
             $iterator = new \RecursiveIteratorIterator($iterator);
             $this->config->getDataMapper()->mapDataToForms($viewData, $iterator);
         }
diff --git a/src/Symfony/Component/Form/Tests/CompoundFormTest.php b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
index 5ebb9906fa..1f7b78889d 100644
--- a/src/Symfony/Component/Form/Tests/CompoundFormTest.php
+++ b/src/Symfony/Component/Form/Tests/CompoundFormTest.php
@@ -352,7 +352,7 @@ class CompoundFormTest extends AbstractFormTest
             ->with('bar', $this->isInstanceOf('\RecursiveIteratorIterator'))
             ->will($this->returnCallback(function ($data, \RecursiveIteratorIterator $iterator) use ($child, $test) {
                 $test->assertInstanceOf('Symfony\Component\Form\Util\InheritDataAwareIterator', $iterator->getInnerIterator());
-                $test->assertSame(array($child), iterator_to_array($iterator));
+                $test->assertSame(array($child->getName() => $child), iterator_to_array($iterator));
             }));
 
         $form->initialize();