diff --git a/app/code/Magento/PageCache/view/frontend/web/js/page-cache.js b/app/code/Magento/PageCache/view/frontend/web/js/page-cache.js
index cc73d6d71c87d98e8342d9190508cf7375c7e2bc..bc7708cf4dc88c424b67f4d1a33cf329342feb50 100644
--- a/app/code/Magento/PageCache/view/frontend/web/js/page-cache.js
+++ b/app/code/Magento/PageCache/view/frontend/web/js/page-cache.js
@@ -295,7 +295,7 @@ define([
      */
     function generateRandomString(chars, length) {
         var result = '';
-        length = length > 0 && Number.isFinite(length) ? length : 1;
+        length = length > 0 ? length : 1;
 
         while (length--) {
             result += chars[Math.round(Math.random() * (chars.length - 1))];