diff --git a/addons/sale_stock/stock.py b/addons/sale_stock/stock.py
index b69a8a27ef6..54bafa55063 100644
--- a/addons/sale_stock/stock.py
+++ b/addons/sale_stock/stock.py
@@ -61,6 +61,15 @@ class stock_picking(osv.osv):
             return picking.note or picking.sale_id.note
         return super(stock_picking, self)._get_comment_invoice(cursor, user, picking)
 
+    def _prepare_invoice_group(self, cr, uid, picking, partner, invoice, context=None):
+        """ Inherit the original function of the 'stock' module in order to override name field
+            to pass the customer reference form the sales order
+        """
+        invoice_vals = super(stock_picking, self)._prepare_invoice_group(cr, uid, picking, partner, invoice, context)
+        if picking.sale_id:
+            invoice_vals['name'] = (invoice.name or '') + ', ' + (picking.sale_id.client_order_ref or '')
+        return invoice_vals
+
     def _prepare_invoice(self, cr, uid, picking, partner, inv_type, journal_id, context=None):
         """ Inherit the original function of the 'stock' module in order to override some
             values if the picking has been generated by a sales order