diff --git a/libraries/Menu.class.php b/libraries/Menu.class.php
index 9b5fdf3792..e6674b929b 100644
--- a/libraries/Menu.class.php
+++ b/libraries/Menu.class.php
@@ -427,7 +427,7 @@ class PMA_Menu
      */
     private function _getServerTabs()
     {
-        $is_superuser = PMA_isSuperuser();
+        $is_superuser = function_exists('PMA_isSuperuser') && PMA_isSuperuser();
         $binary_logs = null;
         if (!defined('PMA_DRIZZLE') || (defined('PMA_DRIZZLE') && ! PMA_DRIZZLE)) {
             $binary_logs = PMA_DBI_fetch_result(