diff --git a/types/ws/ws-tests.ts b/types/ws/ws-tests.ts
index a015f4c387..33df02a62a 100644
--- a/types/ws/ws-tests.ts
+++ b/types/ws/ws-tests.ts
@@ -8,7 +8,7 @@ var WebSocketServer = WebSocket.Server;
 {
     var ws = new WebSocket('ws://www.host.com/path');
     ws.on('open', () => ws.send('something'));
-    ws.on('message', (data, flags) => {});
+    ws.on('message', (data) => {});
 }
 
 {
@@ -46,8 +46,8 @@ var WebSocketServer = WebSocket.Server;
     wsc.on('open',  () => wsc.send(Date.now().toString(), {mask: true}));
     wsc.on('close', () => console.log('disconnected'));
 
-    wsc.on('message', (data, flags) => {
-        console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms', flags);
+    wsc.on('message', (data) => {
+        console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms');
         setTimeout(() => {
             wsc.send(Date.now().toString(), {mask: true});
         }, 500);