diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index 88bbb95648c..d54978e290c 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -215,7 +215,7 @@ odoo.define('website_sale.website_sale', function (require) {
             return false;
         });
 
-        $('.oe_website_sale .a-submit, #comment .a-submit').off('click').on('click', function (event) {
+        $('.oe_website_sale, #comment').off('click', '.a-submit').on('click', '.a-submit', function (event) {
             if (!event.isDefaultPrevented() && !$(this).is(".disabled")) {
                 event.preventDefault();
                 $(this).closest('form').submit();
diff --git a/addons/website_sale_options/static/src/js/website_sale.js b/addons/website_sale_options/static/src/js/website_sale.js
index b766a71200e..da7025d65bb 100644
--- a/addons/website_sale_options/static/src/js/website_sale.js
+++ b/addons/website_sale_options/static/src/js/website_sale.js
@@ -35,7 +35,7 @@ $('.oe_website_sale #add_to_cart, .oe_website_sale #products_grid .a-submit')
                         $(this).remove();
                     });
 
-                $modal.on('click', '.a-submit', function () {
+                $modal.on('click', '.a-submit', function (ev) {
                     var $a = $(this);
                     $form.ajaxSubmit({
                         url:  '/shop/cart/update_option',
@@ -50,6 +50,7 @@ $('.oe_website_sale #add_to_cart, .oe_website_sale #products_grid .a-submit')
                         }
                     });
                     $modal.modal('hide');
+                    ev.preventDefault();
                 });
 
                 $modal.on('click', '.css_attribute_color input', function (event) {