diff --git a/src/app/app.component.spec.ts b/src/app/app.component.spec.ts
index 874756c844..31507831be 100644
--- a/src/app/app.component.spec.ts
+++ b/src/app/app.component.spec.ts
@@ -29,7 +29,7 @@ import { RouteService } from './core/services/route.service';
 import { MockActivatedRoute } from './shared/mocks/active-router.mock';
 import { RouterMock } from './shared/mocks/router.mock';
 import { Angulartics2DSpace } from './statistics/angulartics/dspace-provider';
-import { AppState, storeModuleConfig } from './app.reducer';
+import { storeModuleConfig } from './app.reducer';
 import { LocaleService } from './core/locale/locale.service';
 import { authReducer } from './core/auth/auth.reducer';
 import { cold } from 'jasmine-marbles';
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 534da89ff2..fae2df3220 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -19,7 +19,7 @@ import { MetadataService } from './core/metadata/metadata.service';
 import { HostWindowResizeAction } from './shared/host-window.actions';
 import { HostWindowState } from './shared/search/host-window.reducer';
 import { NativeWindowRef, NativeWindowService } from './core/services/window.service';
-import { isAuthenticationBlocking, isAuthenticationLoading } from './core/auth/selectors';
+import { isAuthenticationBlocking } from './core/auth/selectors';
 import { AuthService } from './core/auth/auth.service';
 import { CSSVariableService } from './shared/sass-helper/sass-helper.service';
 import { MenuService } from './shared/menu/menu.service';
diff --git a/src/app/core/auth/auth-blocking.guard.ts b/src/app/core/auth/auth-blocking.guard.ts
index 7488c0c508..7f9c6bdbd4 100644
--- a/src/app/core/auth/auth-blocking.guard.ts
+++ b/src/app/core/auth/auth-blocking.guard.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { CanActivate } from '@angular/router';
 import { select, Store } from '@ngrx/store';
 import { Observable } from 'rxjs';
-import { distinctUntilChanged, filter, map, take, tap } from 'rxjs/operators';
+import { distinctUntilChanged, filter, map, take } from 'rxjs/operators';
 import { AppState } from '../../app.reducer';
 import { isAuthenticationBlocking } from './selectors';
 
diff --git a/src/app/core/auth/auth.service.ts b/src/app/core/auth/auth.service.ts
index 3671507cb0..06906346ed 100644
--- a/src/app/core/auth/auth.service.ts
+++ b/src/app/core/auth/auth.service.ts
@@ -1,11 +1,10 @@
 import { Inject, Injectable, Optional } from '@angular/core';
-import { PRIMARY_OUTLET, Router, UrlSegmentGroup, UrlTree } from '@angular/router';
+import { Router } from '@angular/router';
 import { HttpHeaders } from '@angular/common/http';
 import { REQUEST, RESPONSE } from '@nguniversal/express-engine/tokens';
 
 import { Observable, of as observableOf } from 'rxjs';
-import { distinctUntilChanged, filter, map, startWith, switchMap, take, withLatestFrom } from 'rxjs/operators';
-import { RouterReducerState } from '@ngrx/router-store';
+import { map, startWith, switchMap, take } from 'rxjs/operators';
 import { select, Store } from '@ngrx/store';
 import { CookieAttributes } from 'js-cookie';
 
@@ -32,7 +31,7 @@ import {
   isTokenRefreshing,
   isAuthenticatedLoaded
 } from './selectors';
-import { AppState, routerStateSelector } from '../../app.reducer';
+import { AppState } from '../../app.reducer';
 import {
   CheckAuthenticationTokenAction,
   ResetAuthenticationMessagesAction,
diff --git a/src/app/core/auth/authenticated.guard.ts b/src/app/core/auth/authenticated.guard.ts
index 4feb6ebce0..0b9eeec509 100644
--- a/src/app/core/auth/authenticated.guard.ts
+++ b/src/app/core/auth/authenticated.guard.ts
@@ -2,7 +2,6 @@ import { Injectable } from '@angular/core';
 import {
   ActivatedRouteSnapshot,
   CanActivate,
-  Route,
   Router,
   RouterStateSnapshot,
   UrlTree
diff --git a/src/app/core/auth/server-auth.service.ts b/src/app/core/auth/server-auth.service.ts
index 84a74548ce..88a4ac406e 100644
--- a/src/app/core/auth/server-auth.service.ts
+++ b/src/app/core/auth/server-auth.service.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { HttpHeaders } from '@angular/common/http';
 
 import { Observable } from 'rxjs';
-import { filter, map, take } from 'rxjs/operators';
+import { map } from 'rxjs/operators';
 
 import { isNotEmpty } from '../../shared/empty.util';
 import { HttpOptions } from '../dspace-rest-v2/dspace-rest-v2.service';
diff --git a/src/app/core/services/browser-hard-redirect.service.spec.ts b/src/app/core/services/browser-hard-redirect.service.spec.ts
index 7eb2c6f494..9d4c5df9a2 100644
--- a/src/app/core/services/browser-hard-redirect.service.spec.ts
+++ b/src/app/core/services/browser-hard-redirect.service.spec.ts
@@ -1,4 +1,4 @@
-import {async, TestBed} from '@angular/core/testing';
+import {TestBed} from '@angular/core/testing';
 import {BrowserHardRedirectService} from './browser-hard-redirect.service';
 
 describe('BrowserHardRedirectService', () => {