diff --git a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
index ce0c4758f1620..2dec965d52c7e 100644
--- a/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
+++ b/src/Symfony/Component/Serializer/Encoder/XmlEncoder.php
@@ -81,7 +81,7 @@ public function decode($data, $format, array $context = array())
         libxml_clear_errors();
 
         $dom = new \DOMDocument();
-        $dom->loadXML($data, LIBXML_NONET | LIBXML_NOBLANKS);
+        $dom->loadXML($data, LIBXML_NONET | LIBXML_NOBLANKS | (defined('LIBXML_PARSEHUGE') ? LIBXML_PARSEHUGE : 0));
 
         libxml_use_internal_errors($internalErrors);
         libxml_disable_entity_loader($disableEntities);