diff --git a/htdocs/core/modules/supplier_order/modules_commandefournisseur.php b/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
index 72268b62831..50982a8b1c7 100644
--- a/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
+++ b/htdocs/core/modules/supplier_order/modules_commandefournisseur.php
@@ -230,7 +230,7 @@ function supplier_order_pdf_create($db, $object, $modele, $outputlangs, $hidedet
 			$interface=new Interfaces($db);
 			$result=$interface->run_triggers('ORDER_SUPPLIER_BUILDDOC',$object,$user,$langs,$conf);
 			if ($result < 0) { 
-				$error++; $this->errors=$interface->errors; 
+				$error++; $obj->errors=$interface->errors;
 			}
 			// End calls triggers