diff --git a/kernel/classes/ezpersistentobject.php b/kernel/classes/ezpersistentobject.php
index 94f28c6252c..9422bf9a9e1 100644
--- a/kernel/classes/ezpersistentobject.php
+++ b/kernel/classes/ezpersistentobject.php
@@ -1339,7 +1339,7 @@ public function attribute( $attr, $noFunction = false )
 
         if ( isset( $def["functions"][$attr] ) )
         {
-            return $this->$def["functions"][$attr]();
+            return $def["functions"][$attr]();
         }
 
         eZDebug::writeError( "Attribute '$attr' does not exist", $def['class_name'] . '::attribute' );