diff --git a/src/Symfony/Bridge/Propel1/Form/DataTransformer/ModelToIdTransformer.php b/src/Symfony/Bridge/Propel1/Form/DataTransformer/ModelToIdTransformer.php
deleted file mode 100644
index 08061a231f01..000000000000
--- a/src/Symfony/Bridge/Propel1/Form/DataTransformer/ModelToIdTransformer.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Bridge\Propel1\Form\DataTransformer;
-
-use Symfony\Bridge\Propel1\Form\ChoiceList\ModelChoiceList;
-use Symfony\Component\Form\DataTransformerInterface;
-use Symfony\Component\Form\Exception\UnexpectedTypeException;
-use Symfony\Component\Form\Exception\TransformationFailedException;
-
-/**
- * @author William Durand <william.durand1@gmail.com>
- */
-class ModelToIdTransformer implements DataTransformerInterface
-{
-    /**
-     * @var \Propel\PropelBundle\Form\ChoiceList\ModelChoiceList
-     */
-    private $choiceList;
-
-    /**
-     * @param \Propel\PropelBundle\Form\ChoiceList\ModelChoiceList $choiceList
-     */
-    public function __construct(ModelChoiceList $choiceList)
-    {
-        $this->choiceList = $choiceList;
-    }
-
-    public function transform($model)
-    {
-        if (null === $model || '' === $model) {
-            return '';
-        }
-
-        if (!is_object($model)) {
-            throw new UnexpectedTypeException($model, 'object');
-        }
-
-        if (count($this->choiceList->getIdentifier()) > 1) {
-            $availableModels = $this->choiceList->getModels();
-
-            return array_search($model, $availableModels);
-        }
-
-        return current($this->choiceList->getIdentifierValues($model));
-    }
-
-    public function reverseTransform($key)
-    {
-        if ('' === $key || null === $key) {
-            return null;
-        }
-
-        if (count($this->choiceList->getIdentifier()) > 1 && !is_numeric($key)) {
-            throw new UnexpectedTypeException($key, 'numeric');
-        }
-
-        if (!$model = $this->choiceList->getModel($key)) {
-            throw new TransformationFailedException(sprintf('The model with key "%s" could not be found', $key));
-        }
-
-        return $model;
-    }
-}
diff --git a/src/Symfony/Bridge/Propel1/Form/Type/ModelType.php b/src/Symfony/Bridge/Propel1/Form/Type/ModelType.php
index 254727da5d13..d24cb06d9cbc 100644
--- a/src/Symfony/Bridge/Propel1/Form/Type/ModelType.php
+++ b/src/Symfony/Bridge/Propel1/Form/Type/ModelType.php
@@ -12,7 +12,6 @@
 namespace Symfony\Bridge\Propel1\Form\Type;
 
 use Symfony\Bridge\Propel1\Form\ChoiceList\ModelChoiceList;
-use Symfony\Bridge\Propel1\Form\DataTransformer\ModelToIdTransformer;
 use Symfony\Bridge\Propel1\Form\DataTransformer\ModelsToArrayTransformer;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\FormBuilder;
@@ -28,8 +27,6 @@ public function buildForm(FormBuilder $builder, array $options)
     {
         if ($options['multiple']) {
             $builder->prependClientTransformer(new ModelsToArrayTransformer($options['choice_list']));
-        } else {
-            $builder->prependClientTransformer(new ModelToIdTransformer($options['choice_list']));
         }
     }