diff --git a/assets/index.less b/assets/index.less
index 82a4bcc..931ffaf 100644
--- a/assets/index.less
+++ b/assets/index.less
@@ -228,7 +228,7 @@
   }
 }
 
-.rc-tooltip {
+.@{prefixClass}-tooltip {
   position: absolute;
   left: -9999px;
   top: -9999px;
diff --git a/src/Handle.jsx b/src/Handle.jsx
index e3d16a5..e0292cb 100644
--- a/src/Handle.jsx
+++ b/src/Handle.jsx
@@ -51,7 +51,7 @@ export default class Handle extends React.Component {
     const isTooltipVisible = dragging || this.state.isTooltipVisible;
     return (
       <Tooltip
-        prefixCls={prefixCls.replace('slider', 'tooltip')}
+        prefixCls={`${prefixCls}-tooltip`}
         placement="top"
         visible={isTooltipVisible}
         overlay={<span>{tipFormatter(value)}</span>}