diff --git a/examples/commentsBox/js/app.js b/examples/commentsBox/js/app.js
index 9bba597c..584feef4 100644
--- a/examples/commentsBox/js/app.js
+++ b/examples/commentsBox/js/app.js
@@ -28,13 +28,13 @@ var CommentList = React.createClass({
 
 
 var CommentForm = React.createClass({
-  handleSubmit: function() {
+  handleSubmit: function(event) {
+    event.preventDefault();
     var author = this.refs.author.getDOMNode().value.trim();
     var text = this.refs.text.getDOMNode().value.trim();
     this.props.onCommentSubmit({author: author, text: text});
     this.refs.author.getDOMNode().value = '';
     this.refs.text.getDOMNode().value = '';
-    return false;
   },
 
   render: function() {