diff --git a/docs/assets/js/src/customizer.js b/docs/assets/js/src/customizer.js
index 59d0936965..12a35a9b91 100644
--- a/docs/assets/js/src/customizer.js
+++ b/docs/assets/js/src/customizer.js
@@ -6,6 +6,7 @@
  * details, see http://creativecommons.org/licenses/by/3.0/.
  */
 
+/* jshint es3:false */
 /* global JSZip, less, autoprefixer, saveAs, UglifyJS, __configBridge, __js, __less, __fonts */
 
 window.onload = function () { // wait for load in a dumb way because B-0
diff --git a/js/tests/unit/.jshintrc b/js/tests/unit/.jshintrc
index 682a49af1e..22e878512b 100644
--- a/js/tests/unit/.jshintrc
+++ b/js/tests/unit/.jshintrc
@@ -1,5 +1,6 @@
 {
   "extends" : "../../.jshintrc",
   "devel"   : true,
+  "es3"     : false,
   "qunit"   : true
 }