diff --git a/htdocs/commande/list.php b/htdocs/commande/list.php
index 4ba2f410cc9..03569128fe3 100644
--- a/htdocs/commande/list.php
+++ b/htdocs/commande/list.php
@@ -170,8 +170,8 @@ $checkedtypetiers = 0;
 $arrayfields = array(
 	'c.ref'=>array('label'=>"Ref", 'checked'=>1, 'position'=>5),
 	'c.ref_client'=>array('label'=>"RefCustomerOrder", 'checked'=>-1, 'position'=>10),
-	'p.ref'=>array('label'=>"ProjectRef", 'checked'=>-1, 'enabled'=>(empty($conf->project->enabled) ? 0 : 1), 'position'=>20),
-	'p.title'=>array('label'=>"ProjectLabel", 'checked'=>0, 'enabled'=>(empty($conf->project->enabled) ? 0 : 1), 'position'=>25),
+	'p.ref'=>array('label'=>"ProjectRef", 'checked'=>-1, 'enabled'=>(!isModEnabled('project') ? 0 : 1), 'position'=>20),
+	'p.title'=>array('label'=>"ProjectLabel", 'checked'=>0, 'enabled'=>(!isModEnabled('project') ? 0 : 1), 'position'=>25),
 	's.nom'=>array('label'=>"ThirdParty", 'checked'=>1, 'position'=>30),
 	's.name_alias'=>array('label'=>"AliasNameShort", 'checked'=>-1, 'position'=>31),
 	's.town'=>array('label'=>"Town", 'checked'=>-1, 'position'=>35),