diff --git a/challenges/01-front-end-development-certification/basic-javascript.json b/challenges/01-front-end-development-certification/basic-javascript.json
index bdb0af0ed9d..205589be326 100644
--- a/challenges/01-front-end-development-certification/basic-javascript.json
+++ b/challenges/01-front-end-development-certification/basic-javascript.json
@@ -988,7 +988,7 @@
       ],
       "tests": [
         "assert(myStr === \"This is the start. This is the end.\", 'message: <code>myStr</code> should have a value of <code>This is the start. This is the end.</code>');",
-        "assert(/var\\s+myStr\\s*=\\s*([\"'])This is the start\\. \\1\\s*\\+\\s*([\"'])This is the end\\.\\2/.test(code), 'message: Use the <code>+</code> operator to build <code>myStr</code>');"
+        "assert(/var\\s+myStr\\s*=\\s*([\"'])This is the start\\. \\1\\s*\\+\\s*([\"'])This is the end\\.([\"'])/.test(code), 'message: Use the <code>+</code> operator to build <code>myStr</code>');"
       ],
       "type": "waypoint",
       "challengeType": "1",