diff --git a/library/Businessprocess/Modification/NodeAction.php b/library/Businessprocess/Modification/NodeAction.php
index 357615d..b5baa5d 100644
--- a/library/Businessprocess/Modification/NodeAction.php
+++ b/library/Businessprocess/Modification/NodeAction.php
@@ -144,7 +144,7 @@ abstract class NodeAction
      */
     public static function unSerialize($string)
     {
-        $object = json_decode($string, JSON_FORCE_OBJECT);
+        $object = json_decode($string, true);
         $action = self::create($object['actionName'], $object['nodeName']);
 
         foreach ($object['properties'] as $key => $val) {