diff --git a/packages/react-scripts/fixtures/kitchensink/integration/initDOM.js b/packages/react-scripts/fixtures/kitchensink/integration/initDOM.js
index c04e60d4c87..afb9c269871 100644
--- a/packages/react-scripts/fixtures/kitchensink/integration/initDOM.js
+++ b/packages/react-scripts/fixtures/kitchensink/integration/initDOM.js
@@ -2,6 +2,7 @@ const fs = require('fs')
 const http = require('http')
 const jsdom = require('jsdom')
 const path = require('path')
+const { expect } = require('chai')
 
 let getMarkup
 let resourceLoader
@@ -39,7 +40,7 @@ if (process.env.E2E_FILE) {
   timeToWaitForJsToExecute = 100
 } else {
   it.only('can run jsdom (at least one of "E2E_FILE" or "E2E_URL" environment variables must be provided)', () => {
-    expect(new Error('This isn\'t the error you are looking for.')).toBeUndefined()
+    expect(new Error('This isn\'t the error you are looking for.')).to.be.undefined()
   })
 }
 
diff --git a/packages/react-scripts/fixtures/kitchensink/src/App.js b/packages/react-scripts/fixtures/kitchensink/src/App.js
index 66cd45541f7..45757f92ad1 100644
--- a/packages/react-scripts/fixtures/kitchensink/src/App.js
+++ b/packages/react-scripts/fixtures/kitchensink/src/App.js
@@ -81,8 +81,7 @@ class App extends React.Component {
         require.ensure([], () => this.setFeature(require('./features/syntax/TemplateInterpolation').default));
         break;
       case 'unknown-ext-inclusion':
-        require.ensure([], () => this.setFeature(require('./features/webpack/UnknownExtInclusion').default)
-        );
+        require.ensure([], () => this.setFeature(require('./features/webpack/UnknownExtInclusion').default));
         break;
       default:
         this.setFeature(null);