diff --git a/components/menu/MenuItem.tsx b/components/menu/MenuItem.tsx
index 3ee55f1894..0bcb9f7c45 100644
--- a/components/menu/MenuItem.tsx
+++ b/components/menu/MenuItem.tsx
@@ -3,22 +3,22 @@ import { Item } from 'rc-menu';
 import PropTypes from 'prop-types';
 import Tooltip from '../tooltip';
 
-const MenuItem: any = (props, { inlineCollapsed }) => {
-  return (
-    <Tooltip
+class MenuItem extends React.Component<any, any> {
+  static contextTypes = {
+    inlineCollapsed: PropTypes.bool,
+  };
+  static isMenuItem = 1;
+  render() {
+    const { inlineCollapsed } = this.context;
+    const props = this.props;
+    return <Tooltip
       title={inlineCollapsed && props.level === 1 ? props.children : ''}
       placement="right"
       overlayClassName={`${props.rootPrefixCls}-inline-collapsed-tooltip`}
     >
       <Item {...props} />
-    </Tooltip>
-  );
-};
-
-MenuItem.contextTypes = {
-  inlineCollapsed: PropTypes.bool,
-};
-
-MenuItem.isMenuItem = 1;
+    </Tooltip>;
+  }
+}
 
 export default MenuItem;
diff --git a/components/menu/__tests__/__snapshots__/demo.test.js.snap b/components/menu/__tests__/__snapshots__/demo.test.js.snap
index 9a70e7daf9..cb6a608b45 100644
--- a/components/menu/__tests__/__snapshots__/demo.test.js.snap
+++ b/components/menu/__tests__/__snapshots__/demo.test.js.snap
@@ -582,7 +582,7 @@ exports[`renders ./components/menu/demo/switch-mode.md correctly 1`] = `
           <div
             aria-expanded="false"
             aria-haspopup="true"
-            aria-owns="sub2$Menu"
+            aria-owns="sub1-2$Menu"
             class="ant-menu-submenu-title"
             style="padding-left:48px"
             title="Submenu"
diff --git a/components/menu/demo/switch-mode.md b/components/menu/demo/switch-mode.md
index 24ea7de1b3..c36872a503 100755
--- a/components/menu/demo/switch-mode.md
+++ b/components/menu/demo/switch-mode.md
@@ -58,7 +58,7 @@ class Sider extends React.Component {
           <SubMenu key="sub1" title={<span><Icon type="appstore" /><span>Navigation Three</span></span>}>
             <Menu.Item key="3">Option 3</Menu.Item>
             <Menu.Item key="4">Option 4</Menu.Item>
-            <SubMenu key="sub2" title="Submenu">
+            <SubMenu key="sub1-2" title="Submenu">
               <Menu.Item key="5">Option 5</Menu.Item>
               <Menu.Item key="6">Option 6</Menu.Item>
             </SubMenu>
diff --git a/package.json b/package.json
index e9fab15aa1..79d20dcc0c 100644
--- a/package.json
+++ b/package.json
@@ -76,8 +76,8 @@
     "rc-tree-select": "~1.10.2",
     "rc-upload": "~2.4.0",
     "rc-util": "^4.0.4",
-    "react-lazy-load": "^3.0.10",
-    "react-slick": "~0.15.0",
+    "react-lazy-load": "^3.0.12",
+    "react-slick": "~0.15.4",
     "shallowequal": "^1.0.1",
     "warning": "~3.0.0"
   },