2 files changed, 2 insertions, 2 deletions

diff --git a/package.json b/package.json
index fee536b..9d98e8a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rc-time-picker",
-  "version": "2.0.1",
+  "version": "2.0.2",
   "description": "React TimePicker",
   "keywords": [
     "react",
diff --git a/src/Panel.jsx b/src/Panel.jsx
index f5cf7bc..9066b03 100644
--- a/src/Panel.jsx
+++ b/src/Panel.jsx
@@ -97,7 +97,7 @@ const Panel = React.createClass({
     const secondOptions = generateOptions(60, disabledSecondOptions, hideDisabledOptions);
 
     return (
-      <div className={classNames({ [`${prefixCls}-inner`]: true, [className]: className })}>
+      <div className={classNames({ [`${prefixCls}-inner`]: true, [className]: !!className })}>
         <Header
           clearText={clearText}
           prefixCls={prefixCls}