diff --git a/lib/Cake/Console/ShellDispatcher.php b/lib/Cake/Console/ShellDispatcher.php
index 4b8a077e6..9882dd9c9 100644
--- a/lib/Cake/Console/ShellDispatcher.php
+++ b/lib/Cake/Console/ShellDispatcher.php
@@ -139,6 +139,8 @@ class ShellDispatcher {
 		if (!defined('TMP') && !is_dir(APP . 'tmp')) {
 			define('TMP', CAKE_CORE_INCLUDE_PATH . DS . 'Cake' . DS . 'Console' . DS . 'Templates' . DS . 'skel' . DS . 'tmp' . DS);
 		}
+
+		// $boot is used by Cake/bootstrap.php file
 		$boot = file_exists(ROOT . DS . APP_DIR . DS . 'Config' . DS . 'bootstrap.php');
 		require CORE_PATH . 'Cake' . DS . 'bootstrap.php';