diff --git a/alfa-client/libs/admin-settings/src/lib/postfach/postfach.service.spec.ts b/alfa-client/libs/admin-settings/src/lib/postfach/postfach.service.spec.ts
index 1beda5cd55814a760a71496d12c6438a848cdfa5..6d0f7f591e881f966b7f58a01a794b6863d05be0 100644
--- a/alfa-client/libs/admin-settings/src/lib/postfach/postfach.service.spec.ts
+++ b/alfa-client/libs/admin-settings/src/lib/postfach/postfach.service.spec.ts
@@ -1,10 +1,6 @@
-import {
-  HttpError,
-  StateResource,
-  createStateResource,
-  mockResourceService,
-} from '@alfa-client/tech-shared';
-import { Mock, useFromMock } from '@alfa-client/test-utils';
+import { HttpError, StateResource, createStateResource } from '@alfa-client/tech-shared';
+import { Mock, mock, useFromMock } from '@alfa-client/test-utils';
+import { Type } from 'ng-mocks';
 import { Observable } from 'rxjs';
 import { singleCold, singleHot } from '../../../../tech-shared/test/marbles';
 import { createPostfachResource, createPostfachSettingItem } from '../../../test/postfach/postfach';
@@ -70,3 +66,7 @@ describe('PostfachService', () => {
     });
   });
 });
+
+export function mockResourceService<T>(service: Type<T>): Mock<T> {
+  return <Mock<T>>{ ...mock(service), get: jest.fn(), save: jest.fn() };
+}
diff --git a/alfa-client/libs/tech-shared/src/lib/resource/resource.util.ts b/alfa-client/libs/tech-shared/src/lib/resource/resource.util.ts
index b0e49a8f21b0b65f1e7042c630c819d52db40ef7..deaa71132a606f656d62efd87deded4ba3e71f2b 100644
--- a/alfa-client/libs/tech-shared/src/lib/resource/resource.util.ts
+++ b/alfa-client/libs/tech-shared/src/lib/resource/resource.util.ts
@@ -21,10 +21,8 @@
  * Die sprachspezifischen Genehmigungen und Beschränkungen
  * unter der Lizenz sind dem Lizenztext zu entnehmen.
  */
-import { Type } from '@angular/core';
 import { Resource, ResourceUri, getEmbeddedResource, getUrl, hasLink } from '@ngxp/rest';
 import { isEqual, isNil, isNull } from 'lodash-es';
-import { Mock, mock } from '../../../../test-utils/src/lib/mocking';
 import { HttpError } from '../tech.model';
 import { encodeUrlForEmbedding, isNotNull } from '../tech.util';
 
@@ -141,7 +139,3 @@ export function isInvalidResourceCombination<T extends Resource, B extends Resou
 export function isStateResoureStable<T>(stateResource: StateResource<T>): boolean {
   return !stateResource.loading && !stateResource.reload;
 }
-
-export function mockResourceService<T>(service: Type<T>): Mock<T> {
-  return <Mock<T>>{ ...mock(service), get: jest.fn(), save: jest.fn() };
-}