diff --git a/challenges/02-javascript-algorithms-and-data-structures/es6.json b/challenges/02-javascript-algorithms-and-data-structures/es6.json
index 008fd3e85..319698b24 100644
--- a/challenges/02-javascript-algorithms-and-data-structures/es6.json
+++ b/challenges/02-javascript-algorithms-and-data-structures/es6.json
@@ -1012,7 +1012,7 @@
         {
           "text": "<code>resultDisplayArray</code> is the desired output.",
           "testString":
-            "assert(makeList(result.failure).every((v, i) => v === `<li class=\"text-warning\">${result.failure[i]}</li>`), '<code>resultDisplayArray</code> is the desired output.');"
+            "assert(makeList(result.failure).every((v, i) => v === `<li class=\"text-warning\">${result.failure[i]}</li>` || v === `<li class='text-warning'>${result.failure[i]}</li>`), '<code>resultDisplayArray</code> is the desired output.');"
         },
         {
           "text": "Template strings were used",