diff --git a/packages/core/src/browser/dialogs.ts b/packages/core/src/browser/dialogs.ts
index c72fe33792ea6..73f0338a86919 100644
--- a/packages/core/src/browser/dialogs.ts
+++ b/packages/core/src/browser/dialogs.ts
@@ -17,7 +17,7 @@
 import { injectable, inject } from 'inversify';
 import { Disposable, MaybePromise, CancellationTokenSource, nls } from '../common';
 import { Key } from './keyboard/keys';
-import { Widget, BaseWidget, Message, addKeyListener, codiconArray } from './widgets';
+import { Widget, BaseWidget, Message, addKeyListener, codiconArray } from './widgets/widget';
 import { FrontendApplicationContribution } from './frontend-application-contribution';
 
 @injectable()
diff --git a/packages/core/src/browser/dialogs/react-dialog.spec.tsx b/packages/core/src/browser/dialogs/react-dialog.spec.tsx
new file mode 100644
index 0000000000000..12aec8aea57e3
--- /dev/null
+++ b/packages/core/src/browser/dialogs/react-dialog.spec.tsx
@@ -0,0 +1,47 @@
+// *****************************************************************************
+// Copyright (C) 2024 Toro Cloud Pty Ltd and others.
+//
+// This program and the accompanying materials are made available under the
+// terms of the Eclipse Public License v. 2.0 which is available at
+// http://www.eclipse.org/legal/epl-2.0.
+//
+// This Source Code may also be made available under the following Secondary
+// Licenses when the conditions for such availability set forth in the Eclipse
+// Public License v. 2.0 are satisfied: GNU General Public License, version 2
+// with the GNU Classpath Exception which is available at
+// https://www.gnu.org/software/classpath/license.html.
+//
+// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
+// *****************************************************************************
+
+import * as assert from 'assert';
+import * as React from 'react';
+import { enableJSDOM } from '../test/jsdom';
+
+let disableJSDOM = enableJSDOM();
+
+import { ReactDialog } from './react-dialog';
+
+class MyDialog extends ReactDialog<void> {
+    constructor() {
+        super({ title: '' });
+    }
+
+    override get value(): void {
+        return;
+    }
+
+    protected override render(): React.ReactNode {
+        return <></>;
+    }
+}
+
+describe('ReactDialog', () => {
+    before(() => disableJSDOM = enableJSDOM());
+    after(() => disableJSDOM());
+
+    it('should be extended', () => {
+        const dialog = new MyDialog();
+        assert.equal(dialog instanceof ReactDialog, true);
+    });
+});