diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
index 73b555666..4880055b3 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
@@ -866,7 +866,7 @@ class ClassMetadataInfo implements ClassMetadata
     public function newInstance()
     {
         if ($this->_prototype === null) {
-            if (PHP_VERSION_ID === 50428 || PHP_VERSION_ID === 50513) {
+            if (PHP_VERSION_ID === 50429 || PHP_VERSION_ID === 50513) {
                 $this->_prototype = $this->reflClass->newInstanceWithoutConstructor();
             } else {
                 $this->_prototype = unserialize(sprintf('O:%d:"%s":0:{}', strlen($this->name), $this->name));