diff --git a/htdocs/compta/facture/list.php b/htdocs/compta/facture/list.php
index 166f38040c2..e963057f7ef 100644
--- a/htdocs/compta/facture/list.php
+++ b/htdocs/compta/facture/list.php
@@ -256,7 +256,7 @@ $arrayfields = array(
 	'f.fk_statut'=>array('label'=>"Status", 'checked'=>1, 'position'=>1000),
 );
 
-if (getDolGlobalString("INVOICE_USE_SITUATION") && $conf->global->INVOICE_USE_RETAINED_WARRANTY) {
+if (getDolGlobalString("INVOICE_USE_SITUATION") && !empty($conf->global->INVOICE_USE_RETAINED_WARRANTY)) {
 	$arrayfields['f.retained_warranty'] = array('label'=>$langs->trans("RetainedWarranty"), 'checked'=>0, 'position'=>86);
 }
 // Overwrite $arrayfields from columns into ->fields (transition before removal of $arrayoffields)