diff --git a/seed/challenges/basic-javascript.json b/seed/challenges/basic-javascript.json
index 7c5df36b40..5a667337fb 100644
--- a/seed/challenges/basic-javascript.json
+++ b/seed/challenges/basic-javascript.json
@@ -221,7 +221,7 @@
       ],
       "tests": [
         "assert(lastLetterOfLastName === \"e\", 'lastLetterOfLastName should be \"e\"');",
-        "assert(editor.getValue().match(/\\.length/g), 'You have to use <code>.length</code> to get the last letter');"
+        "assert(editor.getValue().match(/\\.length/g).length === 2, 'You have to use <code>.length</code> to get the last letter');"
       ],
       "challengeSeed": [
         "var firstName = \"Ada\";",
@@ -253,7 +253,7 @@
       ],
       "tests": [
         "assert(secondToLastLetterOfLastName === 'c', 'secondToLastLetterOfLastName should be \"c\".');",
-        "assert(editor.getValue().match(/\\.length/g), 'You have to use .length to get the third last letter.');"
+        "assert(editor.getValue().match(/\\.length/g).length == 2, 'You have to use .length to get the third last letter.');"
       ],
       "challengeSeed": [
         "var firstName = \"Ada\";",