diff --git a/packages/react-dom/src/client/ReactDOM.js b/packages/react-dom/src/client/ReactDOM.js
index aeeb5b3070639..9223c52fb027c 100644
--- a/packages/react-dom/src/client/ReactDOM.js
+++ b/packages/react-dom/src/client/ReactDOM.js
@@ -10,7 +10,6 @@
 import type {ReactNodeList} from 'shared/ReactTypes';
 import type {Container} from './ReactDOMHostConfig';
 
-import '../shared/checkReact';
 import {
   findDOMNode,
   render,
diff --git a/packages/react-dom/src/shared/checkReact.js b/packages/react-dom/src/shared/checkReact.js
deleted file mode 100644
index 860628b81fb71..0000000000000
--- a/packages/react-dom/src/shared/checkReact.js
+++ /dev/null
@@ -1,17 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow
- */
-
-import * as React from 'react';
-import invariant from 'shared/invariant';
-
-invariant(
-  React,
-  'ReactDOM was loaded before React. Make sure you load ' +
-    'the React package before loading ReactDOM.',
-);