diff --git a/lib/router.js b/lib/router.js
index a4c2d13921..f8348f7ad9 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -22,14 +22,13 @@ for (const project in RouterPath) {
 // index
 router.get('/', require('./routes/index'));
 
-router.get('/robots.txt', async (ctx, next) => {
+router.get('/robots.txt', async (ctx) => {
     if (config.disallowRobot) {
         ctx.set('Content-Type', 'text/plain');
         ctx.body = 'User-agent: *\nDisallow: /';
     } else {
         ctx.throw(404, 'Not Found');
     }
-    await next();
 });
 
 // test