diff --git a/components/auto-complete/index.tsx b/components/auto-complete/index.tsx
index 865b80d7ca..acfaa9984d 100755
--- a/components/auto-complete/index.tsx
+++ b/components/auto-complete/index.tsx
@@ -82,7 +82,7 @@ export default class AutoComplete extends React.Component<AutoCompleteProps, {}>
   }
 
   render() {
-    let {
+    const {
       size, className = '', notFoundContent, prefixCls, optionLabelProp, dataSource, children,
     } = this.props;