diff --git a/addons/point_of_sale/point_of_sale.py b/addons/point_of_sale/point_of_sale.py
index 304f7d71061..4ba175868f2 100644
--- a/addons/point_of_sale/point_of_sale.py
+++ b/addons/point_of_sale/point_of_sale.py
@@ -989,7 +989,7 @@ class pos_order(osv.osv):
                 inv_line['price_unit'] = line.price_unit
                 inv_line['discount'] = line.discount
                 inv_line['name'] = inv_name
-                inv_line['invoice_line_tax_id'] = [(6, 0, [x.id for x in line.product_id.taxes_id] )]
+                inv_line['invoice_line_tax_id'] = [(6, 0, inv_line['invoice_line_tax_id'])]
                 inv_line_ref.create(cr, uid, inv_line, context=context)
             inv_ref.button_reset_taxes(cr, uid, [inv_id], context=context)
             self.signal_workflow(cr, uid, [order.id], 'invoice')