diff --git a/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php b/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
index 75fea1f89..797bc29a8 100644
--- a/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
+++ b/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
@@ -96,7 +96,8 @@ EOT
             );
         }
 
-        $cmf = new DisconnectedClassMetadataFactory($em);
+        $cmf = new DisconnectedClassMetadataFactory();
+        $cmf->setEntityManager($em);
         $metadata = $cmf->getAllMetadata();
         $metadata = MetadataFilter::filter($metadata, $input->getOption('filter'));