diff --git a/components/checkbox/Group.js b/components/checkbox/Group.js
index 1359aa4491..1c9e3e9775 100644
--- a/components/checkbox/Group.js
+++ b/components/checkbox/Group.js
@@ -30,7 +30,7 @@ export default React.createClass({
   },
   render() {
     const options = this.props.options;
-    return (<div className='ant-checkbox-group'>
+    return (<div className="ant-checkbox-group">
       {options.map(option =>
         [<Checkbox disabled={this.props.disabled} checked={this.state.value.indexOf(option) !== -1} onChange={this.toggleOption.bind(this, option)}/>, option])
       }
diff --git a/components/checkbox/index.jsx b/components/checkbox/index.jsx
index 1b803af76d..b04ab10b61 100644
--- a/components/checkbox/index.jsx
+++ b/components/checkbox/index.jsx
@@ -15,4 +15,4 @@ const Checkbox = React.createClass({
 
 Checkbox.Group = Group;
 
-export default Checkbox
+export default Checkbox;