diff --git a/test/network.spec.js b/test/network.spec.js
index d5c915ae6c..93ec7d7b57 100644
--- a/test/network.spec.js
+++ b/test/network.spec.js
@@ -341,116 +341,4 @@ module.exports.describe = function({testRunner, expect, MAC, WIN, FFOX, CHROMIUM
       expect(error.message).toBe('Expected value of header "foo" to be String, but "number" is found.');
     });
   });
-
-  false && describe.skip(FFOX)('WebSocket', function() {
-    it('should work', async({page, server}) => {
-      const value = await page.evaluate((port) => {
-        let cb;
-        const result = new Promise(f => cb = f);
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('message', data => { ws.close(); cb(data.data); });
-        return result;
-      }, server.PORT);
-      expect(value).toBe('incoming');
-    });
-    it('should emit open/close events', async({page, server}) => {
-      let socketClosed;
-      const socketClosePromise = new Promise(f => socketClosed = f);
-      const log = [];
-      page.on('websocket', ws => {
-        ws.on('open', () => log.push(`open<${ws.url()}>`));
-        ws.on('close', () => { log.push('close'); socketClosed(); });
-      });
-      page.evaluate((port) => {
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('open', () => ws.close());
-      }, server.PORT);
-      await socketClosePromise;
-      expect(log.join(':')).toBe(`open<ws://localhost:${server.PORT}/ws>:close`);
-    });
-    it('should expose status', async({page, server}) => {
-      let callback;
-      const result = new Promise(f => callback = f);
-      page.on('websocket', ws => ws.on('open', () => callback(ws)));
-      page.evaluate((port) => {
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('open', () => ws.close());
-      }, server.PORT);
-      const ws = await result;
-      expect(ws.status()).toBe(101);
-      expect(ws.statusText()).toBe('Switching Protocols');
-    });
-    it('should emit error', async({page, server}) => {
-      let callback;
-      const result = new Promise(f => callback = f);
-      page.on('websocket', ws => ws.on('error', callback));
-      page.evaluate((port) => {
-        new WebSocket('ws://localhost:' + port + '/bogus-ws');
-      }, server.PORT);
-      const message = await result;
-      expect(message).toContain('Unexpected response code: 400');
-    });
-    it('should emit frame events', async({page, server}) => {
-      let socketClosed;
-      const socketClosePromise = new Promise(f => socketClosed = f);
-      const log = [];
-      page.on('websocket', ws => {
-        ws.on('open', () => log.push('open'));
-        ws.on('messageSent', d => log.push('sent<' + d + '>'));
-        ws.on('messageReceived', d => log.push('received<' + d + '>'));
-        ws.on('close', () => { log.push('close'); socketClosed(); });
-      });
-      page.evaluate((port) => {
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('open', () => ws.send('outgoing'));
-        ws.addEventListener('message', () => { ws.close(); });
-      }, server.PORT);
-      await socketClosePromise;
-      expect(log.join(':')).toBe('open:sent<outgoing>:received<incoming>:close');
-    });
-    it('should emit binary frame events', async({page, server}) => {
-      let doneCallback;
-      const donePromise = new Promise(f => doneCallback = f);
-      const sent = [];
-      page.on('websocket', ws => {
-        ws.on('close', doneCallback);
-        ws.on('messageSent', d => sent.push(d));
-      });
-      page.evaluate((port) => {
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('open', () => {
-          const binary = new Uint8Array(5);
-          for (let i = 0; i < 5; ++i)
-            binary[i] = i;
-          ws.send('text');
-          ws.send(binary);
-          ws.close();
-        });
-      }, server.PORT);
-      await donePromise;
-      expect(sent[0]).toBe('text');
-      for (let i = 0; i < 5; ++i)
-        expect(sent[1][i]).toBe(i);
-    });
-    it('should report headers', async({page, server}) => {
-      let socketClosed;
-      let requestHeaders;
-      let responseHeaders;
-      const socketClosePromise = new Promise(f => socketClosed = f);
-      page.on('websocket', ws => {
-        requestHeaders = ws.requestHeaders();
-        ws.on('open', () => {
-          responseHeaders = ws.responseHeaders();
-        });
-        ws.on('close', socketClosed);
-      });
-      page.evaluate((port) => {
-        const ws = new WebSocket('ws://localhost:' + port + '/ws');
-        ws.addEventListener('open', () => ws.close());
-      }, server.PORT);
-      await socketClosePromise;
-      expect(requestHeaders['connection']).toBe('Upgrade');
-      expect(responseHeaders['upgrade']).toBe('websocket');
-    });
-  });
 };