diff --git a/htdocs/modulebuilder/template/admin/myobject_extrafields.php b/htdocs/modulebuilder/template/admin/myobject_extrafields.php
index c844f80e4cc..0e42b75da0b 100644
--- a/htdocs/modulebuilder/template/admin/myobject_extrafields.php
+++ b/htdocs/modulebuilder/template/admin/myobject_extrafields.php
@@ -26,9 +26,22 @@
  *		\brief      Page to setup extra fields of myobject
  */
 
-require '../main.inc.php';
-require_once DOL_DOCUMENT_ROOT.'/core/lib/bom.lib.php';
+// Load Dolibarr environment
+$res = 0;
+// Try main.inc.php into web root known defined into CONTEXT_DOCUMENT_ROOT (not always defined)
+if (!$res && !empty($_SERVER["CONTEXT_DOCUMENT_ROOT"])) $res = @include $_SERVER["CONTEXT_DOCUMENT_ROOT"]."/main.inc.php";
+// Try main.inc.php into web root detected using web root calculated from SCRIPT_FILENAME
+$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, ($i + 1)))."/main.inc.php";
+// Try main.inc.php using relative path
+if (!$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/class/extrafields.class.php';
+require_once '../lib/mymodule.lib.php';
 
 // Load translation files required by the page
 $langs->loadLangs(array('mymodule@mymodule', 'admin'));