diff --git a/seed/challenges/02-javascript-algorithms-and-data-structures/basic-javascript.json b/seed/challenges/02-javascript-algorithms-and-data-structures/basic-javascript.json
index fedc2c7ed19..0244616b710 100644
--- a/seed/challenges/02-javascript-algorithms-and-data-structures/basic-javascript.json
+++ b/seed/challenges/02-javascript-algorithms-and-data-structures/basic-javascript.json
@@ -2621,10 +2621,11 @@
       ],
       "tail": [],
       "solutions": [
-        "function timesFive(num) {\n  return num * 5;\n}"
+        "function timesFive(num) {\n  return num * 5;\n}\ntimesFive(10);"
       ],
       "tests": [
         "assert(typeof timesFive === 'function', 'message: <code>timesFive</code> should be a function');",
+        "assert(code.match(/timesFive\\(\\s*\\d+\\s*\\)/g), 'message: function <code>timesFive</code> should be called with a number');",        
         "assert(timesFive(5) === 25, 'message: <code>timesFive(5)</code> should return <code>25</code>');",
         "assert(timesFive(2) === 10, 'message: <code>timesFive(2)</code> should return <code>10</code>');",
         "assert(timesFive(0) === 0, 'message: <code>timesFive(0)</code> should return <code>0</code>');"