diff --git a/test/chromium/tracing.spec.js b/test/chromium/tracing.spec.js
index 69690647b6..d242af429b 100644
--- a/test/chromium/tracing.spec.js
+++ b/test/chromium/tracing.spec.js
@@ -65,8 +65,7 @@ module.exports.describe = function({testRunner, expect, defaultBrowserOptions, p
     it('should return a buffer', async({browser, page, server, outputFile}) => {
       await browser.startTracing(page, {screenshots: true, path: outputFile});
       await page.goto(server.PREFIX + '/grid.html');
-      await browser.stopTracing();
-      const trace = null; //await browser.stopTracing();
+      const trace = await browser.stopTracing();
       const buf = fs.readFileSync(outputFile);
       expect(trace.toString()).toEqual(buf.toString(), 'Tracing buffer mismatch');
     });