diff --git a/htdocs/core/lib/invoice.lib.php b/htdocs/core/lib/invoice.lib.php
index b532b9db108..81572f5b8d9 100644
--- a/htdocs/core/lib/invoice.lib.php
+++ b/htdocs/core/lib/invoice.lib.php
@@ -176,7 +176,7 @@ function invoice_admin_prepare_head()
 	$head[$h][2] = 'attributeslinesrec';
 	$h++;
 
-	if ($conf->global->INVOICE_USE_SITUATION) {	// Warning, implementation is seriously bugged and a new one not compatible is expected to become stable
+	if (getDolGlobalInt('INVOICE_USE_SITUATION')) {	// Warning, implementation is seriously bugged and a new one not compatible is expected to become stable
 		$head[$h][0] = DOL_URL_ROOT.'/admin/facture_situation.php';
 		$head[$h][1] = $langs->trans("InvoiceSituation");
 		$head[$h][2] = 'situation';