diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index 9b93721ca6a..161087a3bf9 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -1261,7 +1261,7 @@ class Facture extends CommonInvoice
 		$object->ref_client         = '';
 		$object->close_code         = '';
 		$object->close_note         = '';
-		if ($conf->global->MAIN_DONT_KEEP_NOTE_ON_CLONING == 1) {
+		if (getDolGlobalInt('MAIN_DONT_KEEP_NOTE_ON_CLONING') == 1) {
 			$object->note_private = '';
 			$object->note_public = '';
 		}