diff --git a/packages/frontend-test-utils/package.json b/packages/frontend-test-utils/package.json
index 33b1f41a8c..7f157cdc4f 100644
--- a/packages/frontend-test-utils/package.json
+++ b/packages/frontend-test-utils/package.json
@@ -31,7 +31,6 @@
     "dist"
   ],
   "dependencies": {
-    "@backstage/core-components": "workspace:^",
     "@backstage/frontend-app-api": "workspace:^",
     "@backstage/frontend-plugin-api": "workspace:^",
     "@backstage/test-utils": "workspace:^",
diff --git a/packages/frontend-test-utils/src/app/createExtensionTester.test.tsx b/packages/frontend-test-utils/src/app/createExtensionTester.test.tsx
index de52ca52de..04da2b7e89 100644
--- a/packages/frontend-test-utils/src/app/createExtensionTester.test.tsx
+++ b/packages/frontend-test-utils/src/app/createExtensionTester.test.tsx
@@ -15,6 +15,7 @@
  */
 
 import React, { useCallback } from 'react';
+import { Link } from 'react-router-dom';
 import { fireEvent, screen, waitFor } from '@testing-library/react';
 import {
   analyticsApiRef,
@@ -27,7 +28,6 @@ import {
   useAnalytics,
   useApi,
 } from '@backstage/frontend-plugin-api';
-import { Link } from '@backstage/core-components';
 import { MockAnalyticsApi } from '../apis';
 import { createExtensionTester } from './createExtensionTester';
 
@@ -175,7 +175,7 @@ describe('createExtensionTester', () => {
     ).resolves.toBeInTheDocument();
   });
 
-  it('should capture click events in anylitics', async () => {
+  it('should capture click events in analytics', async () => {
     // Mocking the analytics api implementation
     const analyticsApiMock = new MockAnalyticsApi();
 
diff --git a/packages/frontend-test-utils/src/app/createExtensionTester.tsx b/packages/frontend-test-utils/src/app/createExtensionTester.tsx
index 0404cf1ade..fdac4746d5 100644
--- a/packages/frontend-test-utils/src/app/createExtensionTester.tsx
+++ b/packages/frontend-test-utils/src/app/createExtensionTester.tsx
@@ -15,8 +15,7 @@
  */
 
 import React, { ComponentType, ReactNode, useContext, useState } from 'react';
-import { MemoryRouter } from 'react-router-dom';
-import { Link } from '@backstage/core-components';
+import { MemoryRouter, Link } from 'react-router-dom';
 import { RenderResult, render } from '@testing-library/react';
 import { createSpecializedApp } from '@backstage/frontend-app-api';
 import {
@@ -40,7 +39,7 @@ import { resolveExtensionDefinition } from '../../../frontend-plugin-api/src/wir
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
 import { createSignInPageExtension } from '../../../frontend-plugin-api/src/extensions/createSignInPageExtension';
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
-import { InternalExtensionDefinition } from '../../../frontend-plugin-api/src/wiring/createExtension';
+import { toInternalExtensionDefinition } from '../../../frontend-plugin-api/src/wiring/createExtension';
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
 import { InternalAppContext } from '../../../frontend-app-api/src/wiring/InternalAppContext';
 // eslint-disable-next-line @backstage/no-relative-monorepo-imports
@@ -195,8 +194,7 @@ export class ExtensionTester {
     options?: { config?: TConfig },
   ): ExtensionTester {
     const tester = new ExtensionTester();
-    const { output, factory, ...rest } =
-      subject as InternalExtensionDefinition<TConfig>;
+    const { output, factory, ...rest } = toInternalExtensionDefinition(subject);
     // attaching to core/routes to render as index route
     const extension = createExtension({
       ...rest,
diff --git a/yarn.lock b/yarn.lock
index 910432180d..aef0f13137 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4227,7 +4227,6 @@ __metadata:
   resolution: "@backstage/frontend-test-utils@workspace:packages/frontend-test-utils"
   dependencies:
     "@backstage/cli": "workspace:^"
-    "@backstage/core-components": "workspace:^"
     "@backstage/frontend-app-api": "workspace:^"
     "@backstage/frontend-plugin-api": "workspace:^"
     "@backstage/test-utils": "workspace:^"