diff --git a/challenges/01-front-end-development-certification/basic-javascript.json b/challenges/01-front-end-development-certification/basic-javascript.json
index e9852324bd..15adb9bd5b 100644
--- a/challenges/01-front-end-development-certification/basic-javascript.json
+++ b/challenges/01-front-end-development-certification/basic-javascript.json
@@ -1868,7 +1868,8 @@
         "var myArray = [[\"John\", 23], [\"cat\", 2]];\nvar removedFromMyArray = myArray.pop();"
       ],
       "tests": [
-        "assert((function(d){if(d[0][0] == 'John' && d[0][1] == 23 && d[2] == undefined){return true;}else{return false;}})(myArray), 'message: <code>myArray</code> should only contain <code>[[\"John\", 23]]</code>.');",
+        "assert((function(d){if(d[0][0] == 'John' && d[0][1] == 23 && d[1] == undefined){return true;}else{return false;}})(myArray), 'message: <code>myArray</code> should only contain <code>[[\"John\", 23]]</code>.');",
+        "assert(/removedFromMyArray\\s*=\\s*myArray\\s*.\\s*pop\\s*(\\s*)/.test(code), 'message: Use <code>pop()</code> on <code>myArray</code>');",
         "assert((function(d){if(d[0] == 'cat' && d[1] == 2 && d[2] == undefined){return true;}else{return false;}})(removedFromMyArray), 'message: <code>removedFromMyArray</code> should only contain <code>[\"cat\", 2]</code>.');"
       ],
       "type": "waypoint",