diff --git a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
index 0c61fab8fdb0..f18370fde6f8 100644
--- a/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
+++ b/src/Symfony/Component/Form/Extension/Core/EventListener/ResizeFormListener.php
@@ -107,7 +107,7 @@ public function preSubmit(FormEvent $event)
         }
 
         if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
-            throw new UnexpectedTypeException($data, 'array or (\Traversable and \ArrayAccess)');
+            $data = array();
         }
 
         // Remove all empty rows
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
index bcfae9e06883..e4959a3c95a8 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/EventListener/ResizeFormListenerTest.php
@@ -167,15 +167,14 @@ public function testPreSubmitDoesNothingIfNotAllowAddNorAllowDelete()
         $this->assertFalse($this->form->has('2'));
     }
 
-    /**
-     * @expectedException \Symfony\Component\Form\Exception\UnexpectedTypeException
-     */
-    public function testPreSubmitRequiresArrayOrTraversable()
+    public function testPreSubmitDealsWithNoArrayOrTraversable()
     {
         $data = 'no array or traversable';
         $event = new FormEvent($this->form, $data);
         $listener = new ResizeFormListener('text', array(), false, false);
         $listener->preSubmit($event);
+
+        $this->assertFalse($this->form->has('1'));
     }
 
     public function testPreSubmitDealsWithNullData()