diff --git a/libs/sysplugins/smarty_internal_template.php b/libs/sysplugins/smarty_internal_template.php
index 8f3966fe..0734d8d5 100644
--- a/libs/sysplugins/smarty_internal_template.php
+++ b/libs/sysplugins/smarty_internal_template.php
@@ -70,13 +70,6 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase
      */
     public $tpl_function = array();
 
-    /**
-     * Template is inheritance child template
-     *
-     * @var bool
-     */
-    public $isChild = false;
-
     /**
      * Create template data object
      * Some of the global Smarty settings copied to template scope