diff --git a/app.js b/app.js
index 8d33b16..3ad29bc 100644
--- a/app.js
+++ b/app.js
@@ -54,8 +54,8 @@ const options = {
   cert: fs.readFileSync('./server/ssl/cert.pem', 'utf-8')
 }
 
-const server = https.createServer(options, app);
-const io = new Server(server, { allowEIO3: true });
+const httpsServer = https.createServer(options, app);
+const io = new Server(httpsServer, { allowEIO3: true });
 // const io = new Server(server, { origins: '*:*', allowEIO3: true });
 
 // io.use(middleware);