diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php b/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
index 498ff5400..5a9a97b83 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php
@@ -22,13 +22,10 @@ namespace Doctrine\ORM\Mapping;
 use Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory;
 use Doctrine\Common\Persistence\Mapping\ClassMetadata as ClassMetadataInterface;
 use Doctrine\Common\Persistence\Mapping\ReflectionService;
-use Doctrine\ORM\Event\OnClassMetadataNotFoundEventArgs;
-use ReflectionException;
-use Doctrine\ORM\ORMException;
-use Doctrine\ORM\EntityManager;
 use Doctrine\DBAL\Platforms;
 use Doctrine\ORM\EntityManagerInterface;
 use Doctrine\ORM\Event\LoadClassMetadataEventArgs;
+use Doctrine\ORM\Event\OnClassMetadataNotFoundEventArgs;
 use Doctrine\ORM\Events;
 use Doctrine\ORM\Id\BigIntegerIdentityGenerator;
 use Doctrine\ORM\Id\IdentityGenerator;