diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index fb6b76c83a8..b9b351b9266 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -51,7 +51,7 @@ $('.oe_website_sale').each(function () {
         var product_id = parseInt($input.data('product-id'),10);
         var product_ids = [product_id];
         $dom_optional.each(function(){
-            product_ids.push($(this).find('span[data-oe-model="product.product"]').data('oe-id'));
+            product_ids.push($(this).find('span[data-product-id]').data('product-id'));
         });
         if (isNaN(value)) value = 0;
         openerp.jsonRpc("/shop/get_unit_price", 'call', {
@@ -63,7 +63,7 @@ $('.oe_website_sale').each(function () {
             $dom.find('.text-danger').toggle(res[product_id]<default_price && (default_price-res[product_id] > default_price/100));
             //optional case
             $dom_optional.each(function(){
-                var id = $(this).find('span[data-oe-model="product.product"]').data('oe-id');
+                var id = $(this).find('span[data-product-id]').data('product-id');
                 var price = parseFloat($(this).find(".text-danger > span.oe_currency_value").text());
                 $(this).find("span.oe_currency_value").last().text(res[id].toFixed(2));
                 $(this).find('.text-danger').toggle(res[id]<price && (price-res[id]>price/100));
diff --git a/addons/website_sale_options/views/templates.xml b/addons/website_sale_options/views/templates.xml
index 4692d15a691..7875687a411 100644
--- a/addons/website_sale_options/views/templates.xml
+++ b/addons/website_sale_options/views/templates.xml
@@ -19,7 +19,7 @@
   </xpath>
   <xpath expr="//table[@id='cart_products']/tbody//td[last()]" position="inside">
     <t t-if="line.linked_line_id">
-      <span class="js_quantity text-muted" t-att-data-line-id="line.id" t-esc="int(line.product_uom_qty)"/>
+      <span class="js_quantity text-muted" t-att-data-line-id="line.id" t-att-data-product-id="line.product_id.id" t-esc="int(line.product_uom_qty)"/>
     </t>
   </xpath>
 </template>