diff --git a/app/code/Magento/Catalog/view/base/web/js/price-box.js b/app/code/Magento/Catalog/view/base/web/js/price-box.js
index a8b7cb7b92a36..b095d24cf4810 100644
--- a/app/code/Magento/Catalog/view/base/web/js/price-box.js
+++ b/app/code/Magento/Catalog/view/base/web/js/price-box.js
@@ -184,7 +184,7 @@ define([
                     var type = $(element).data('priceType'),
                         amount = parseFloat($(element).data('priceAmount'));
 
-                    if (type && !isNaN(amount)) {
+                    if (type && !_.isNaN(amount)) {
                         prices[type] = {
                             amount: amount
                         };