diff --git a/src/app/core/data/feature-authorization/authorization-data.service.spec.ts b/src/app/core/data/feature-authorization/authorization-data.service.spec.ts
index df46d3f0a1..255ce8f741 100644
--- a/src/app/core/data/feature-authorization/authorization-data.service.spec.ts
+++ b/src/app/core/data/feature-authorization/authorization-data.service.spec.ts
@@ -3,7 +3,7 @@ import { SiteDataService } from '../site-data.service';
 import { AuthService } from '../../auth/auth.service';
 import { Site } from '../../shared/site.model';
 import { EPerson } from '../../eperson/models/eperson.model';
-import { of as observableOf } from 'rxjs';
+import { of as observableOf, combineLatest as observableCombineLatest, Observable } from 'rxjs';
 import { FeatureID } from './feature-id';
 import { hasValue } from '../../../shared/empty.util';
 import { RequestParam } from '../../cache/models/request-param.model';
@@ -17,6 +17,7 @@ describe('AuthorizationDataService', () => {
   let service: AuthorizationDataService;
   let siteService: SiteDataService;
   let authService: AuthService;
+  let objectCache;
 
   let site: Site;
   let ePerson: EPerson;
@@ -43,7 +44,11 @@ describe('AuthorizationDataService', () => {
       isAuthenticated: () => observableOf(true),
       getAuthenticatedUserFromStore: () => observableOf(ePerson)
     } as AuthService;
-    service = new AuthorizationDataService(requestService, undefined, undefined, undefined, undefined, undefined, undefined, undefined, authService, siteService);
+    objectCache = jasmine.createSpyObj('objectCache', {
+      addDependency: undefined,
+      removeDependents: undefined,
+    });
+    service = new AuthorizationDataService(requestService, undefined, undefined, objectCache, undefined, undefined, undefined, undefined, authService, siteService);
   }
 
   beforeEach(() => {
@@ -110,6 +115,43 @@ describe('AuthorizationDataService', () => {
         expect(service.searchBy).toHaveBeenCalledWith('object', createExpected(objectUrl, ePersonUuid, FeatureID.LoginOnBehalfOf), true, true);
       });
     });
+
+    describe('dependencies', () => {
+      let addDependencySpy;
+
+      beforeEach(() => {
+        (service.searchBy as any).and.returnValue(observableOf('searchBy RD$'));
+        addDependencySpy = spyOn(service as any, 'addDependency');
+      });
+
+      it('should add a dependency on the objectUrl', (done) => {
+        addDependencySpy.and.callFake((href$: Observable<string>, dependsOn$: Observable<string>) => {
+          observableCombineLatest([href$, dependsOn$]).subscribe(([href, dependsOn]) => {
+            expect(href).toBe('searchBy RD$');
+            expect(dependsOn).toBe('object-href');
+          });
+        });
+
+        service.searchByObject(FeatureID.AdministratorOf, 'object-href').subscribe(() => {
+          expect(addDependencySpy).toHaveBeenCalled();
+          done();
+        });
+      });
+
+      it('should add a dependency on the Site object if no objectUrl is given', (done) => {
+        addDependencySpy.and.callFake((object$: Observable<any>, dependsOn$: Observable<string>) => {
+          observableCombineLatest([object$, dependsOn$]).subscribe(([object, dependsOn]) => {
+            expect(object).toBe('searchBy RD$');
+            expect(dependsOn).toBe('test-site-href');
+          });
+        });
+
+        service.searchByObject(FeatureID.AdministratorOf).subscribe(() => {
+          expect(addDependencySpy).toHaveBeenCalled();
+          done();
+        });
+      });
+    });
   });
 
   describe('isAuthorized', () => {
diff --git a/src/app/core/data/feature-authorization/authorization-data.service.ts b/src/app/core/data/feature-authorization/authorization-data.service.ts
index f27919844d..008e69b119 100644
--- a/src/app/core/data/feature-authorization/authorization-data.service.ts
+++ b/src/app/core/data/feature-authorization/authorization-data.service.ts
@@ -18,10 +18,10 @@ import { followLink, FollowLinkConfig } from '../../../shared/utils/follow-link-
 import { RemoteData } from '../remote-data';
 import { PaginatedList } from '../paginated-list.model';
 import { catchError, map, switchMap } from 'rxjs/operators';
-import { hasValue, isNotEmpty } from '../../../shared/empty.util';
+import { hasNoValue, hasValue, isNotEmpty } from '../../../shared/empty.util';
 import { RequestParam } from '../../cache/models/request-param.model';
 import { AuthorizationSearchParams } from './authorization-search-params';
-import { addSiteObjectUrlIfEmpty, oneAuthorizationMatchesFeature } from './authorization-utils';
+import { oneAuthorizationMatchesFeature } from './authorization-utils';
 import { FeatureID } from './feature-id';
 import { getFirstCompletedRemoteData } from '../../shared/operators';
 import { CoreState } from '../../core-state.model';
@@ -102,12 +102,28 @@ export class AuthorizationDataService extends DataService<Authorization> {
    *                                    {@link HALLink}s should be automatically resolved
    */
   searchByObject(featureId?: FeatureID, objectUrl?: string, ePersonUuid?: string, options: FindListOptions = {}, useCachedVersionIfAvailable = true, reRequestOnStale = true, ...linksToFollow: FollowLinkConfig<Authorization>[]): Observable<RemoteData<PaginatedList<Authorization>>> {
-    return observableOf(new AuthorizationSearchParams(objectUrl, ePersonUuid, featureId)).pipe(
-      addSiteObjectUrlIfEmpty(this.siteService),
+    const objectUrl$ = observableOf(objectUrl).pipe(
+      switchMap((url) => {
+        if (hasNoValue(url)) {
+          return this.siteService.find().pipe(
+            map((site) => site.self)
+          );
+        } else {
+          return observableOf(url);
+        }
+      }),
+    );
+
+    const out$ = objectUrl$.pipe(
+      map((url: string) => new AuthorizationSearchParams(url, ePersonUuid, featureId)),
       switchMap((params: AuthorizationSearchParams) => {
         return this.searchBy(this.searchByObjectPath, this.createSearchOptions(params.objectUrl, options, params.ePersonUuid, params.featureId), useCachedVersionIfAvailable, reRequestOnStale, ...linksToFollow);
       })
     );
+
+    this.addDependency(out$, objectUrl$);
+
+    return out$;
   }
 
   /**