diff --git a/src/server/http.js b/src/server/http.js
index 6f4c4e1..0a7ad0d 100644
--- a/src/server/http.js
+++ b/src/server/http.js
@@ -23,13 +23,9 @@ export function createHttpServer() {
       target: 'http://127.0.0.1:31345',
     });
     proxy.on('error', (err, req, res) => {
-      if (!(res instanceof ServerResponse)) {
-        return;
+      if (res instanceof ServerResponse) {
+        res.status(502).end('Bad Gateway (WDS)');
       }
-      res.writeHead(500, {
-        'Content-Type': 'text/plain',
-      });
-      res.end('Bad Proxy');
     });
     app.get('*', (req, res) => proxy.web(req, res));
     httpServer.on('close', () => proxy.close());