diff --git a/htdocs/resource/agenda.php b/htdocs/resource/agenda.php
index cb13ce78e7d..8984c9ced72 100644
--- a/htdocs/resource/agenda.php
+++ b/htdocs/resource/agenda.php
@@ -135,7 +135,7 @@ if ($object->id > 0) {
 	}
 	llxHeader('', $title);
 
-	if (!empty($conf->notification->enabled)) {
+	if (isModEnabled('notification')) {
 		$langs->load("mails");
 	}
 	$type = $langs->trans('ResourceSingular');
diff --git a/htdocs/resource/element_resource.php b/htdocs/resource/element_resource.php
index 09c7befc664..e1a323ffd4a 100644
--- a/htdocs/resource/element_resource.php
+++ b/htdocs/resource/element_resource.php
@@ -29,11 +29,11 @@ require '../main.inc.php';
 require_once DOL_DOCUMENT_ROOT.'/resource/class/dolresource.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/fichinter/class/fichinter.class.php';
-if (!empty($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';
 }
-if (!empty($conf->product->enabled) || !empty($conf->service->enabled)) {
+if (isModEnabled('product') || isModEnabled('service')) {
 	require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 }
 
@@ -349,7 +349,7 @@ if (!$ret) {
 			// Thirdparty
 			//$morehtmlref.='<br>'.$langs->trans('ThirdParty') . ' : ' . $object->thirdparty->getNomUrl(1);
 			// Project
-			if (!empty($conf->project->enabled)) {
+			if (isModEnabled('project')) {
 				$langs->load("projects");
 				//$morehtmlref.='<br>'.$langs->trans('Project') . ' ';
 				$morehtmlref .= $langs->trans('Project').': ';
@@ -517,7 +517,7 @@ if (!$ret) {
 			// Thirdparty
 			$morehtmlref .= $langs->trans('ThirdParty').' : '.$fichinter->thirdparty->getNomUrl(1);
 			// Project
-			if (!empty($conf->project->enabled)) {
+			if (isModEnabled('project')) {
 				$langs->load("projects");
 				$morehtmlref .= '<br>'.$langs->trans('Project').' ';
 				if ($user->rights->commande->creer) {