diff --git a/src/Handle.jsx b/src/Handle.jsx
index 98b968b..d355c92 100644
--- a/src/Handle.jsx
+++ b/src/Handle.jsx
@@ -12,7 +12,7 @@ export default class Handle extends React.Component {
 
   render() {
     const props = this.props;
-    const {className, prefixCls, offset, tipTransitionName, value} = props;
+    const {className, tipTransitionName, offset, value} = props;
     const {dragging, noTip} = props;
 
     const style = { left: offset + '%' };
@@ -27,7 +27,7 @@ export default class Handle extends React.Component {
 
     const isTooltipVisible = dragging || this.state.isTooltipVisible;
     return (<Tooltip
-              prefixCls={prefixCls + '-tooltip'}
+              prefixCls={className.replace('handle', 'tooltip')}
               placement={{points: ['bc', 'tc']}}
               visible={isTooltipVisible}
               overlay={<span>{value}</span>}
@@ -51,7 +51,6 @@ export default class Handle extends React.Component {
 
 Handle.propTypes = {
   className: React.PropTypes.string,
-  prefixCls: React.PropTypes.string,
   offset: React.PropTypes.number,
   tipTransitionName: React.PropTypes.string,
   value: React.PropTypes.number,
diff --git a/src/Slider.jsx b/src/Slider.jsx
index 5b8837c..ca91329 100644
--- a/src/Slider.jsx
+++ b/src/Slider.jsx
@@ -193,9 +193,8 @@ class Slider extends React.Component {
         onTouchStart={disabled ? noop : this.onTouchStart.bind(this)}
         onMouseDown={disabled ? noop : this.onSliderMouseDown.bind(this)}>
         {track}
-        <Handle className={handleClassName} prefixCls={prefixCls}
-          offset={offset} tipTransitionName={tipTransitionName} value={value}
-          dragging={dragging} noTip={marksLen > 0} />
+        <Handle className={handleClassName} tipTransitionName={tipTransitionName}
+          offset={offset} value={value} dragging={dragging} noTip={marksLen > 0} />
         {steps}
         {mark}
         {children}