diff --git a/addons/sale/stock.py b/addons/sale/stock.py
index 9e3cd377f03..af1bfb2aa69 100644
--- a/addons/sale/stock.py
+++ b/addons/sale/stock.py
@@ -131,13 +131,19 @@ class stock_picking(osv.osv):
         for invoice in invoice_obj.browse(cursor, user, invoice_ids,
                 context=context):
             invoices[invoice.id] = invoice
-
+            
         for picking in picking_obj.browse(cursor, user, picking_ids,
                 context=context):
 
             if not picking.sale_id:
                 continue
             sale_lines = picking.sale_id.order_line
+            invoice_created = invoices[result[picking.id]]
+            
+            if picking.sale_id.client_order_ref:
+                inv_name = picking.sale_id.client_order_ref + " : " + invoice_created.name
+                invoice_obj.write(cursor, user, [invoice_created.id], {'name': inv_name}, context=context)
+            
             for sale_line in sale_lines:
                 if sale_line.product_id.type == 'service' and sale_line.invoiced == False:
                     if group: