diff --git a/components/radio/group.jsx b/components/radio/group.jsx
index 7d99b885383f23bfc3f5d01e600f1dd7dec68f72..34f9bc0eea2916ababc102d5701d5a0a0a46254b 100644
--- a/components/radio/group.jsx
+++ b/components/radio/group.jsx
@@ -4,7 +4,7 @@ var Radio = require('rc-radio');
 var AntRadioGroup = React.createClass({
   getDefaultProps: function () {
     return {
-      prefixCls: 'rc-radio-group'
+      prefixCls: 'ant-radio-group'
     };
   },
   getInitialState: function () {
diff --git a/style/components/radio.less b/style/components/radio.less
index f306f04452089a2e377299d2460bc421c3fb478a..7fe9b62c2ea2e818789aab02e7615408ddf6abc3 100644
--- a/style/components/radio.less
+++ b/style/components/radio.less
@@ -1,4 +1,4 @@
-@radioGroupPrefixCls: rc-radio-group;
+@radioGroupPrefixCls: ant-radio-group;
 @radioWrapPrefixCls: ant-radio;
 @radioInnerPrefixCls: ~"@{radioWrapPrefixCls}-inner";
 @radioDuration: .3s;