diff --git a/addons/l10n_fr_pos_cert/static/src/xml/OrderReceipt.xml b/addons/l10n_fr_pos_cert/static/src/xml/OrderReceipt.xml
index b9a979ed470..e2efd46a4e5 100644
--- a/addons/l10n_fr_pos_cert/static/src/xml/OrderReceipt.xml
+++ b/addons/l10n_fr_pos_cert/static/src/xml/OrderReceipt.xml
@@ -16,7 +16,7 @@
                     Old unit price:
                     <span class="oldPrice">
                         <s>
-                            <t t-out="env.pos.format_currency(line.fixed_lst_price, 'Product Price')" /> / Units
+                            <t t-out="env.pos.format_currency(line.taxed_lst_unit_price, 'Product Price')" /> / Units
                         </s>
                     </span>
                 </div>
diff --git a/addons/l10n_fr_pos_cert/static/src/xml/Orderline.xml b/addons/l10n_fr_pos_cert/static/src/xml/Orderline.xml
index 254ea4173f0..431f5f878bb 100644
--- a/addons/l10n_fr_pos_cert/static/src/xml/Orderline.xml
+++ b/addons/l10n_fr_pos_cert/static/src/xml/Orderline.xml
@@ -8,7 +8,7 @@
                     Old unit price:
                     <span class="oldPrice">
                         <s>
-                            <t t-out="env.pos.format_currency(props.line.get_fixed_lst_price(),'Product Price')" /> / Units
+                            <t t-out="env.pos.format_currency(props.line.get_taxed_lst_unit_price(),'Product Price')" /> / Units
                         </s>
                     </span>
                 </li>
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 99caed40dfe..6e1eadcd86f 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -2344,8 +2344,9 @@ export class Orderline extends PosModel {
             tax: this.get_tax(),
             product_description: this.get_product().description,
             product_description_sale: this.get_product().description_sale,
-            pack_lot_lines: this.get_lot_lines(),
-            customer_note: this.get_customer_note(),
+            pack_lot_lines:      this.get_lot_lines(),
+            customer_note:      this.get_customer_note(),
+            taxed_lst_unit_price: this.get_taxed_lst_unit_price(),
         };
     }
     generate_wrapped_product_name() {