diff --git a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeCollectionListener.php b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeCollectionListener.php
index eaabcfc991..fb0d43bae2 100644
--- a/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeCollectionListener.php
+++ b/src/Symfony/Bridge/Doctrine/Form/EventListener/MergeCollectionListener.php
@@ -33,7 +33,7 @@ class MergeCollectionListener implements EventSubscriberInterface
 
     public function onBindNormData(FilterDataEvent $event)
     {
-        $collection = $event->getForm()->getData();
+        $collection = $event->getForm()->getNormData();
         $data = $event->getData();
 
         if (!$collection) {