diff --git a/test/navigation.spec.js b/test/navigation.spec.js
index 211d07c1e2..1cd258c718 100644
--- a/test/navigation.spec.js
+++ b/test/navigation.spec.js
@@ -346,6 +346,11 @@ describe('Page.goto', function() {
     }
     expect(error.message).toContain(url);
   });
+  it('should be able to navigate to a page controlled by service worker', async({page, server}) => {
+    await page.goto(server.PREFIX + '/serviceworkers/fetch/sw.html');
+    await page.evaluate(() => window.activationPromise);
+    await page.goto(server.PREFIX + '/serviceworkers/fetch/sw.html');
+  });
   it('should send referer', async({page, server}) => {
     const [request1, request2] = await Promise.all([
       server.waitForRequest('/grid.html'),
diff --git a/test/network.spec.js b/test/network.spec.js
index 30e44e733f..c9d9b19c3c 100644
--- a/test/network.spec.js
+++ b/test/network.spec.js
@@ -41,7 +41,7 @@ describe('Page.Events.Request', function() {
     await page.evaluate(() => fetch('/empty.html'));
     expect(requests.length).toBe(2);
   });
-  it.fail(FFOX)('should report requests and responses handled by service worker', async({page, server}) => {
+  it('should report requests and responses handled by service worker', async({page, server}) => {
     // Firefox issues Network.requestWillBeSent and nothing else.
     await page.goto(server.PREFIX + '/serviceworkers/fetchdummy/sw.html');
     await page.evaluate(() => window.activationPromise);