diff --git a/benchmark/tls/tls-connect.js b/benchmark/tls/tls-connect.js
index 628b040ee88c9b..65d1b101c4102a 100644
--- a/benchmark/tls/tls-connect.js
+++ b/benchmark/tls/tls-connect.js
@@ -11,7 +11,6 @@ const bench = common.createBenchmark(main, {
 
 var clientConn = 0;
 var serverConn = 0;
-var server;
 var dur;
 var concurrency;
 var running = true;
@@ -28,7 +27,7 @@ function main(conf) {
     ciphers: 'AES256-GCM-SHA384'
   };
 
-  server = tls.createServer(options, onConnection);
+  const server = tls.createServer(options, onConnection);
   server.listen(common.PORT, onListening);
 }