diff --git a/Classes/Domain/Model/Mapping.php b/Classes/Domain/Model/Mapping.php
index 8db25d1..a32392a 100644
--- a/Classes/Domain/Model/Mapping.php
+++ b/Classes/Domain/Model/Mapping.php
@@ -22,7 +22,7 @@
 class Mapping
 {
 
-    public const NEOS_TYPE_FIELD = '_neosType';
+    public const NEOS_TYPE_FIELD = 'neos_type';
 
     /**
      * @var AbstractType