diff --git a/test/sample-dynamic.html b/test/sample-dynamic.html
index bc25de03d..24357fa7a 100644
--- a/test/sample-dynamic.html
+++ b/test/sample-dynamic.html
@@ -9,7 +9,7 @@
 <script type="text/x-mathjax-config">
   MathJax.Hub.Config({
     extensions: ["tex2jax.js"],
-    jax: ["input/TeX","output/HTML-CSS"],
+    jax: ["input/TeX","output/HTML-CSS"]
   });
 </script>
 <script type="text/javascript" src="../MathJax.js"></script>