diff --git a/agent/custom/includes/inc_all_custom.php b/agent/custom/includes/inc_all_custom.php
index a66fcce4d..69b86bba7 100644
--- a/agent/custom/includes/inc_all_custom.php
+++ b/agent/custom/includes/inc_all_custom.php
@@ -1,4 +1,5 @@
 <?php
+// Do not modify - copy if you need to edit
 
 require_once "../../config.php";
 require_once "../../functions.php";