diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 8beae962d09..5ee6657841a 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -1743,7 +1743,7 @@ function pdf_getLinkedObjects($object,$outputlangs)
 				else	// We show both info of order and shipment
 				{
 					$linkedobjects[$objecttype]['ref_title'] = $outputlangs->transnoentities("RefOrder") . ' / ' . $outputlangs->transnoentities("RefSending");
-					$linkedobjects[$objecttype]['ref_value'] = $outputlangs->transnoentities($order->ref) . ($order->ref_client ? ' ('.$order->ref_client.')' : '');
+					$linkedobjects[$objecttype]['ref_value'] = $outputlangs->convToOutputCharset($order->ref) . ($order->ref_client ? ' ('.$order->ref_client.')' : '');
 					$linkedobjects[$objecttype]['ref_value'].= ' / ' . $outputlangs->transnoentities($elementobject->ref);
 					$linkedobjects[$objecttype]['date_title'] = $outputlangs->transnoentities("OrderDate") . ' / ' . $outputlangs->transnoentities("DateSending");
 					$linkedobjects[$objecttype]['date_value'] = dol_print_date($order->date,'day','',$outputlangs);