diff --git a/src/components/SiderMenu/BaseMenu.js b/src/components/SiderMenu/BaseMenu.js
index 7048d1dde1965c09054440d1c11ff8451b1ce921..3fd4abf36b9ebfb1b9c3ad3f37e4ba21cf978bda 100644
--- a/src/components/SiderMenu/BaseMenu.js
+++ b/src/components/SiderMenu/BaseMenu.js
@@ -72,9 +72,7 @@ export default class BaseMenu extends PureComponent {
 
   // Get the currently selected menu
   getSelectedMenuKeys = pathname =>
-    urlToList(pathname).map(function(itemPath) {
-      return getMenuMatches(this.flatMenuKeys, itemPath).pop();
-    });
+    urlToList(pathname).map(itemPath => getMenuMatches(this.flatMenuKeys, itemPath).pop());
 
   /**
    * get SubMenu or Item