diff --git a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
index 97f5facf62..4ff2e508c1 100644
--- a/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
+++ b/src/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
@@ -279,6 +279,7 @@ abstract class DoctrineType extends AbstractType implements ResetInterface
 
     public function reset()
     {
+        $this->idReaders = [];
         $this->choiceLoaders = [];
     }
 }