diff --git a/Configuration/Configurator.php b/Configuration/Configurator.php
index 0322abc6de..7822edb418 100644
--- a/Configuration/Configurator.php
+++ b/Configuration/Configurator.php
@@ -20,6 +20,7 @@ class Configurator
 {
     private $backendConfig = array();
     private $entitiesConfig = array();
+    private $inspector;
     private $reflector;
     private $defaultEntityFields = array();