diff --git a/htdocs/fourn/facture/document.php b/htdocs/fourn/facture/document.php
index 6cedd8884df..4479b89c34d 100644
--- a/htdocs/fourn/facture/document.php
+++ b/htdocs/fourn/facture/document.php
@@ -35,7 +35,7 @@ require_once DOL_DOCUMENT_ROOT.'/core/lib/fourn.lib.php';
 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/class/html.formfile.class.php';
-if (!empty($conf->project->enabled)) {
+if (isModEnabled('project')) {
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
 }
 
@@ -116,7 +116,7 @@ if ($object->id > 0) {
 		$morehtmlref .= ' (<a href="'.DOL_URL_ROOT.'/fourn/facture/list.php?socid='.$object->thirdparty->id.'&search_company='.urlencode($object->thirdparty->name).'">'.$langs->trans("OtherBills").'</a>)';
 	}
 	// Project
-	if (!empty($conf->project->enabled)) {
+	if (isModEnabled('project')) {
 		$langs->load("projects");
 		$morehtmlref .= '<br>'.$langs->trans('Project').' ';
 		if ($user->rights->facture->creer) {