diff --git a/seed/challenges/basic-javascript.json b/seed/challenges/basic-javascript.json
index 7c5df36b40..fd7636b2e6 100644
--- a/seed/challenges/basic-javascript.json
+++ b/seed/challenges/basic-javascript.json
@@ -638,7 +638,7 @@
         "Let's take the code we had last time and <code>unshift</code>this value to the start: <code>\"Paul\" </code>"
       ],
       "tests": [
-        "assert((function(d){if(d[0].toLowerCase() == 'paul' && d[1] == 23 && d[2][0] != undefined && d[2][0] == 'dog' && d[2][1] != undefined && d[2][1] == 3){return true;}else{return false;}})(myArray), 'myArray should now have [\"Paul\", 23, [\"dog\", 3]])');"
+        "assert((function(d){if(typeof(d[0]) === \"string\" && d[0].toLowerCase() == 'paul' && d[1] == 23 && d[2][0] != undefined && d[2][0] == 'dog' && d[2][1] != undefined && d[2][1] == 3){return true;}else{return false;}})(myArray), '<code>myArray</code> should now have [\"Paul\", 23, [\"dog\", 3]]).');"
       ],
       "challengeSeed": [
         "var ourArray = [\"Stimpson\", \"J\", [\"cat\"]];",