diff --git a/src/Symfony/Component/Form/Extension/Core/Type/DateType.php b/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
index 667b7db3d1e4..05b2aaedc13e 100644
--- a/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
+++ b/src/Symfony/Component/Form/Extension/Core/Type/DateType.php
@@ -269,7 +269,7 @@ private function formatTimestamps(\IntlDateFormatter $formatter, $regex, array $
         $timezone = $formatter->getTimezoneId();
 
         if (version_compare(\PHP_VERSION, '5.5.0-dev', '>=')) {
-            $formatter->setTimeZone(\DateTimeZone::UTC);
+            $formatter->setTimeZone('UTC');
         } else {
             $formatter->setTimeZoneId('UTC');
         }