diff --git a/lib/Doctrine/ORM/EntityManager.php b/lib/Doctrine/ORM/EntityManager.php
index d21d3fb86..65ec9336d 100644
--- a/lib/Doctrine/ORM/EntityManager.php
+++ b/lib/Doctrine/ORM/EntityManager.php
@@ -21,11 +21,8 @@ namespace Doctrine\ORM;
 
 use Exception;
 use Doctrine\Common\EventManager;
-use Doctrine\Common\Persistence\ObjectManager;
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\LockMode;
-use Doctrine\ORM\Mapping\ClassMetadata;
-use Doctrine\ORM\Mapping\ClassMetadataFactory;
 use Doctrine\ORM\Query\ResultSetMapping;
 use Doctrine\ORM\Proxy\ProxyFactory;
 use Doctrine\ORM\Query\FilterCollection;