diff --git a/build/phpstan/bootstrap_action.php b/build/phpstan/bootstrap_action.php
index 2bcc70dd965..f1a6a638f91 100644
--- a/build/phpstan/bootstrap_action.php
+++ b/build/phpstan/bootstrap_action.php
@@ -27,6 +27,7 @@ if (!defined("NOHTTPSREDIRECT")) {
 }
 
 // Defined some constants and load Dolibarr env to reduce PHPStan bootstrap that fails to load a lot of things.
+$dolibarr_main_document_root = __DIR__ . '/../../htdocs';
 define('DOL_DOCUMENT_ROOT', __DIR__ . '/../../htdocs');
 define('DOL_DATA_ROOT', __DIR__ . '/../../documents');
 define('DOL_URL_ROOT', '/');
@@ -42,6 +43,7 @@ define('MAIN_DB_PREFIX', 'llx_');
  * @var User $user
  */
 
- global $conf, $db, $hookmanager, $langs, $mysoc, $user;
+global $conf, $db, $hookmanager, $langs, $mysoc, $user;
+global $dolibarr_main_document_root;
 
 // include_once DOL_DOCUMENT_ROOT . '/../../htdocs/main.inc.php';