diff --git a/approot.inc.php b/approot.inc.php
index 76685ab32..d07b3e6cd 100644
--- a/approot.inc.php
+++ b/approot.inc.php
@@ -1,6 +1,6 @@
 <?php
 
-define('APPROOT', dirname(__FILE__).DIRECTORY_SEPARATOR);
+define('APPROOT', dirname(__FILE__).'/');
 define('APPCONF', APPROOT.'conf/');
 define('ITOP_DEFAULT_ENV', 'production');
 define('MAINTENANCE_MODE_FILE', APPROOT.'data/.maintenance');