diff --git a/addons/pos_mercury/static/src/js/pos_mercury.js b/addons/pos_mercury/static/src/js/pos_mercury.js
index 20e602c7aa2..af5470f3716 100644
--- a/addons/pos_mercury/static/src/js/pos_mercury.js
+++ b/addons/pos_mercury/static/src/js/pos_mercury.js
@@ -440,6 +440,7 @@ PaymentScreenWidget.include({
                     order.selected_paymentline.paid = true;
                     order.selected_paymentline.mercury_swipe_pending = false;
                     order.selected_paymentline.mercury_amount = response.authorize;
+                    order.selected_paymentline.set_amount(response.authorize);
                     order.selected_paymentline.mercury_card_number = decodedMagtek['number'];
                     order.selected_paymentline.mercury_card_brand = response.card_type;
                     order.selected_paymentline.mercury_card_owner_name = decodedMagtek['name'];