diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index bed79caa3..184b291da 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -3422,8 +3422,6 @@ class UnitOfWork implements PropertyChangedListener
                         );
                         $managedCol->setOwner($managedCopy, $assoc2);
                         $prop->setValue($managedCopy, $managedCol);
-
-//                        $this->originalEntityData[spl_object_hash($entity)][$name] = $managedCol;
                     }
 
                     if ($assoc2['isCascadeMerge']) {