diff --git a/lib/Doctrine/ORM/OptimisticLockException.php b/lib/Doctrine/ORM/OptimisticLockException.php
index 028698cd8..9b5147aae 100644
--- a/lib/Doctrine/ORM/OptimisticLockException.php
+++ b/lib/Doctrine/ORM/OptimisticLockException.php
@@ -33,6 +33,7 @@ class OptimisticLockException extends ORMException
 
     public function __construct($msg, $entity)
     {
+        parent::__construct($msg);
         $this->entity = $entity;
     }