diff --git a/grafana-plugin/src/components/NavBar/NavBarSubtitle.tsx b/grafana-plugin/src/components/NavBar/NavBarSubtitle.tsx
index 283e7807..b4ed66bf 100644
--- a/grafana-plugin/src/components/NavBar/NavBarSubtitle.tsx
+++ b/grafana-plugin/src/components/NavBar/NavBarSubtitle.tsx
@@ -1,10 +1,10 @@
 import React from 'react';
 
+import { Card } from '@grafana/ui';
 import cn from 'classnames/bind';
-import { Card, Icon } from '@grafana/ui';
-import { APP_SUBTITLE } from 'utils/consts';
 
 import gitHubStarSVG from 'assets/img/github_star.svg';
+import { APP_SUBTITLE } from 'utils/consts';
 
 import styles from './NavBarSubtitle.module.css';
 
@@ -15,8 +15,8 @@ function NavBarSubtitle() {
     <div className={cx('navbar-container')}>
       {APP_SUBTITLE}
       <Card heading={undefined} className={cx('navbar-heading')}>
-        <a href="https://github.com/grafana/oncall" className={cx('navbar-link')} target="_blank">
-          <img src={gitHubStarSVG} className={cx('navbar-star-icon')} alt='' /> Star us on GitHub
+        <a href="https://github.com/grafana/oncall" className={cx('navbar-link')} target="_blank" rel="noreferrer">
+          <img src={gitHubStarSVG} className={cx('navbar-star-icon')} alt="" /> Star us on GitHub
         </a>
       </Card>
     </div>