diff --git a/htdocs/compta/facture/contact.php b/htdocs/compta/facture/contact.php
index 1b75d43753e..17d601a3988 100644
--- a/htdocs/compta/facture/contact.php
+++ b/htdocs/compta/facture/contact.php
@@ -31,7 +31,7 @@ require_once DOL_DOCUMENT_ROOT.'/contact/class/contact.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/discount.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/invoice.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/html.formcompany.class.php';
-if (!empty($conf->project->enabled)) {
+if (isModEnabled('project')) {
 	require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
 }
 
@@ -137,7 +137,7 @@ if ($id > 0 || !empty($ref)) {
 		// Thirdparty
 		$morehtmlref .= '<br>'.$langs->trans('ThirdParty').' : '.$object->thirdparty->getNomUrl(1, 'customer');
 		// Project
-		if (!empty($conf->project->enabled)) {
+		if (isModEnabled('project')) {
 			$langs->load("projects");
 			$morehtmlref .= '<br>'.$langs->trans('Project').' ';
 			if ($user->rights->facture->creer) {