diff --git a/admin/setup.php b/admin/setup.php
index 755faf7..2002f58 100644
--- a/admin/setup.php
+++ b/admin/setup.php
@@ -3,9 +3,18 @@
  * GPL v3+
  */
 
-require '../../main.inc.php';
+$res = 0;
+if (!$res && !empty($_SERVER["CONTEXT_DOCUMENT_ROOT"])) $res = @include $_SERVER["CONTEXT_DOCUMENT_ROOT"]."/main.inc.php";
+$tmp = empty($_SERVER['SCRIPT_FILENAME']) ? '' : $_SERVER['SCRIPT_FILENAME']; $tmp2 = realpath(__FILE__); $i = strlen($tmp) - 1; $j = strlen($tmp2) - 1;
+while ($i > 0 && $j > 0 && isset($tmp[$i]) && isset($tmp2[$j]) && $tmp[$i] == $tmp2[$j]) { $i--; $j--; }
+if (!$res && $i > 0 && file_exists(substr($tmp, 0, ($i + 1))."/main.inc.php")) $res = @include substr($tmp, 0, ($i + 1))."/main.inc.php";
+if (!$res && $i > 0 && file_exists(dirname(substr($tmp, 0, ($i + 1)))."/main.inc.php")) $res = @include dirname(substr($tmp, 0, ($i + 1)))."/main.inc.php";
+if (!$res && file_exists("../../main.inc.php")) $res = @include "../../main.inc.php";
+if (!$res && file_exists("../../../main.inc.php")) $res = @include "../../../main.inc.php";
+if (!$res) die("Include of main fails");
+
 require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
-require_once __DIR__.'/../lib/eplan.lib.php';
+dol_include_once('/eplan/lib/eplan.lib.php');
 
 $langs->loadLangs(array('admin', 'eplan@eplan'));