From 2834df0af5133c9bb056db1108f3bdcbba393799 Mon Sep 17 00:00:00 2001
From: AllenFang <ayu780129@hotmail.com>
Date: Mon, 16 Oct 2017 20:47:23 +0800
Subject: [PATCH] assign key prop on expand column

---
 src/TableHeader.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/TableHeader.js b/src/TableHeader.js
index 0c9159377..bd1beeb0b 100644
--- a/src/TableHeader.js
+++ b/src/TableHeader.js
@@ -64,13 +64,13 @@ class TableHeader extends Component {
     rows[0].push( [
       this.props.expandColumnVisible &&
         this.props.expandColumnBeforeSelectColumn &&
-          <ExpandRowHeaderColumn rowCount={ rowCount + 1 }/>
+          <ExpandRowHeaderColumn key='expandCol' rowCount={ rowCount + 1 }/>
     ], [
       this.renderSelectRowHeader(rowCount + 1, rowKey++)
     ], [
       this.props.expandColumnVisible &&
         !this.props.expandColumnBeforeSelectColumn &&
-          <ExpandRowHeaderColumn rowCount={ rowCount + 1 }/>
+          <ExpandRowHeaderColumn key='expandCol' rowCount={ rowCount + 1 }/>
     ]);
 
     React.Children.forEach(this.props.children, (elm) => {