diff --git a/src/Symfony/Bundle/DoctrineBundle/DoctrineBundle.php b/src/Symfony/Bundle/DoctrineBundle/DoctrineBundle.php
index 2ef73a3839d6..7bd97e942158 100644
--- a/src/Symfony/Bundle/DoctrineBundle/DoctrineBundle.php
+++ b/src/Symfony/Bundle/DoctrineBundle/DoctrineBundle.php
@@ -42,9 +42,9 @@ class_exists('Doctrine\ORM\Mapping\Driver\AnnotationDriver');
         if ($this->container->hasParameter('doctrine.orm.proxy_namespace')) {
             $namespace = $this->container->getParameter('doctrine.orm.proxy_namespace');
             $dir = $this->container->getParameter('doctrine.orm.proxy_dir');
-            $container = $this->container;
+            $container =& $this->container;
 
-            spl_autoload_register(function($class) use ($namespace, $dir, $container) {
+            spl_autoload_register(function($class) use ($namespace, $dir, &$container) {
                 if (0 === strpos($class, $namespace)) {
                     $className = substr($class, strlen($namespace) +1);
                     $file = $dir.DIRECTORY_SEPARATOR.$className.'.php';