diff --git a/packages/backend-common/src/index.ts b/packages/backend-common/src/index.ts
index 4bc60f557f..b2c38ab506 100644
--- a/packages/backend-common/src/index.ts
+++ b/packages/backend-common/src/index.ts
@@ -17,4 +17,3 @@
 export * from './errors';
 export * from './logging';
 export * from './middleware';
-export * from './testing';
diff --git a/packages/backend-common/src/testing/MockedMemberFunctions.ts b/packages/backend-common/src/testing/MockedMemberFunctions.ts
deleted file mode 100644
index 9b35908bff..0000000000
--- a/packages/backend-common/src/testing/MockedMemberFunctions.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright 2020 Spotify AB
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * For any type T, generate a new type that is identical but also has the
- * jest.fn signature on all member functions.
- *
- * When writing tests against a type, you sometimes end up in a situation where
- * you need to write expect(x.y as jest.Mock).toHaveBeenCalled... because the
- * x.y member was considered to be the actual function type. You could also
- * change your test to instead create a "raw" object { y: jest.fn() } but then
- * you lose type safety when doing x.y.mockReturnValue(...). So you start
- * trying to do { y: jest.fn() as X['y'] } as X or similar trickery.
- *
- * This type lets you say const x: MockedMemberFunctions<X> = { y: jest.fn() }
- * and keep all the type safety at every step.
- */
-export type MockedMemberFunctions<T> = {
-  [K in keyof T]: T[K] extends (...args: infer A) => infer B
-    ? T[K] & jest.Mock<B, A>
-    : T[K];
-};
diff --git a/packages/backend-common/src/testing/index.ts b/packages/backend-common/src/testing/index.ts
deleted file mode 100644
index c12297465b..0000000000
--- a/packages/backend-common/src/testing/index.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright 2020 Spotify AB
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-export type { MockedMemberFunctions } from './MockedMemberFunctions';
diff --git a/plugins/catalog-backend/src/catalog/DatabaseEntitiesCatalog.test.ts b/plugins/catalog-backend/src/catalog/DatabaseEntitiesCatalog.test.ts
index c5101dff7a..1de5038112 100644
--- a/plugins/catalog-backend/src/catalog/DatabaseEntitiesCatalog.test.ts
+++ b/plugins/catalog-backend/src/catalog/DatabaseEntitiesCatalog.test.ts
@@ -14,13 +14,12 @@
  * limitations under the License.
  */
 
-import type { MockedMemberFunctions } from '@backstage/backend-common';
 import type { Entity, EntityPolicy } from '@backstage/catalog-model';
 import type { Database } from '../database';
 import { DatabaseEntitiesCatalog } from './DatabaseEntitiesCatalog';
 
 describe('DatabaseEntitiesCatalog', () => {
-  let db: MockedMemberFunctions<Database>;
+  let db: jest.Mocked<Database>;
   let policy: EntityPolicy;
 
   beforeEach(() => {