diff --git a/addons/point_of_sale/point_of_sale.py b/addons/point_of_sale/point_of_sale.py
index 15e42559a8c..03c622127f1 100644
--- a/addons/point_of_sale/point_of_sale.py
+++ b/addons/point_of_sale/point_of_sale.py
@@ -1083,7 +1083,7 @@ class pos_order(osv.osv):
                 })
 
                 if data_type == 'product':
-                    key = ('product', values['partner_id'], values['product_id'], values['debit'] > 0)
+                    key = ('product', values['partner_id'], values['product_id'], values['analytic_account_id'], values['debit'] > 0)
                 elif data_type == 'tax':
                     key = ('tax', values['partner_id'], values['tax_code_id'], values['debit'] > 0)
                 elif data_type == 'counter_part':