diff --git a/public/js/varien/product_options.js b/public/js/varien/product_options.js
index 534e8f0ce..4a72370cc 100644
--- a/public/js/varien/product_options.js
+++ b/public/js/varien/product_options.js
@@ -9,7 +9,7 @@
  * @license     https://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
  */
 
-var Product = Product ?? {};
+var Product = Product || {};
 
 class OptionsPrice {
     constructor(config) {