diff --git a/preload.php b/preload.php
index 86322d5e7137..9d16bb31554f 100644
--- a/preload.php
+++ b/preload.php
@@ -57,6 +57,7 @@ class preload
                 '/system/Config/Routes.php',
                 '/system/Language/',
                 '/system/bootstrap.php',
+                '/system/util_bootstrap.php',
                 '/system/rewrite.php',
                 '/Views/',
                 // Errors occur.