diff --git a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
index 4f60f2132594f..65da8f884744b 100644
--- a/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
+++ b/src/Symfony/Component/VarDumper/Cloner/AbstractCloner.php
@@ -93,6 +93,7 @@ abstract class AbstractCloner implements ClonerInterface
         ':mysql link' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castMysqlLink',
         ':process' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castProcess',
         ':stream' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castStream',
+        ':persistent stream' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castStream',
         ':stream-context' => 'Symfony\Component\VarDumper\Caster\ResourceCaster::castStreamContext',
         ':xml' => 'Symfony\Component\VarDumper\Caster\XmlResourceCaster::castXml',
     );