diff --git a/addons/sale/static/src/js/product_discount_field.js b/addons/sale/static/src/js/product_discount_field.js
index 4ccc1823f31..72761573e5c 100644
--- a/addons/sale/static/src/js/product_discount_field.js
+++ b/addons/sale/static/src/js/product_discount_field.js
@@ -37,7 +37,7 @@ export class ProductDiscountField extends FloatField {
                         return {
                             operation: "UPDATE",
                             record: line,
-                            data: {["discount"]: Number(ev.target.value)},
+                            data: {["discount"]: Number(this.props.value)},
                         };
                     });