diff --git a/challenges/basic-javascript.json b/challenges/basic-javascript.json
index d444d15902..92cb7d80e1 100644
--- a/challenges/basic-javascript.json
+++ b/challenges/basic-javascript.json
@@ -647,7 +647,7 @@
         "Let's try creating and calling a function now called <code>myFunction</code>"
       ],
       "tests":[
-        "assert((function(){if(typeof(f) !== 'undefined' && typeof(f) === 'number' && f === a + b  && editor.getValue().match(RegExp('return\\\\(a\\\\+b\\\\)', 'g')).length >= 1){return(true);}else{return(false);}})(), 'Your function should return the value of a + b');"
+        "assert((function(){if(typeof(f) !== 'undefined' && typeof(f) === 'number' && f === a + b  && editor.getValue().match(/return/gi).length >= 1 && editor.getValue().match(/a/gi).length >= 1 && editor.getValue().match(/b/gi).length >= 1 && editor.getValue().match(/\\+/gi).length >= 1){return(true);}else{return(false);}})(), 'Your function should return the value of a + b');"
       ],
       "challengeSeed":[
         "var a = 4;",