diff --git a/htdocs/compta/tva/document.php b/htdocs/compta/tva/document.php
index dc362e60051..745742b1c8e 100644
--- a/htdocs/compta/tva/document.php
+++ b/htdocs/compta/tva/document.php
@@ -34,7 +34,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/images.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/vat.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';
-if (!empty($conf->project->enabled)) {
+if (isModEnabled('project')) {
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
 	require_once DOL_DOCUMENT_ROOT.'/core/class/html.formprojet.class.php';
 }
@@ -102,7 +102,7 @@ if ($action == 'setlib' && $permissiontoadd) {
  */
 
 $form = new Form($db);
-if (!empty($conf->project->enabled)) {
+if (isModEnabled('project')) {
 	$formproject = new FormProjets($db);
 }