diff --git a/content/practices/high-contrast/high-contrast-practice.js b/content/practices/high-contrast/high-contrast-practice.js
index a00ac45830..0e306f0375 100644
--- a/content/practices/high-contrast/high-contrast-practice.js
+++ b/content/practices/high-contrast/high-contrast-practice.js
@@ -1,6 +1,6 @@
 /* high-contrast.js */
 
-use strict;
+'use strict';
 
 const htmlColorValues = [
   {