diff --git a/app/code/community/Ikonoshirt/Pbkdf2/Model/Stub/EE.php b/app/code/community/Ikonoshirt/Pbkdf2/Model/Stub/EE.php
index 9d6832c..12a6af6 100644
--- a/app/code/community/Ikonoshirt/Pbkdf2/Model/Stub/EE.php
+++ b/app/code/community/Ikonoshirt/Pbkdf2/Model/Stub/EE.php
@@ -35,6 +35,8 @@ class Ikonoshirt_Pbkdf2_Model_Stub_EE extends Enterprise_Pci_Model_Encryption
 
     public function __construct()
     {
+        parent::__construct();
+
         $this->_realHashModel = Mage::getModel(
             'ikonoshirt_pbkdf2/encryption', array($this)
         );