diff --git a/src/app/authentication.guard.ts b/src/app/authentication.guard.ts
index c4cf7fe48b391d136528d19c0e46ba80842c0154..603935c9260f39e6966742a718c6636d4da76296 100644
--- a/src/app/authentication.guard.ts
+++ b/src/app/authentication.guard.ts
@@ -5,10 +5,12 @@ import { AuthenticationService } from './authentication.service';
 import 'rxjs/add/operator/map';
 import 'rxjs/add/observable/of';
 import 'rxjs/add/operator/catch';
+import { NotificationService } from './notification.service';
 
 @Injectable()
 export class AuthenticationGuard implements CanActivate {
   constructor(private authenticationService: AuthenticationService,
+              private notificationService: NotificationService,
               private router: Router) {
   }
 
@@ -16,6 +18,7 @@ export class AuthenticationGuard implements CanActivate {
               state: RouterStateSnapshot): Observable<boolean> {
     return this.authenticationService.isLoggedIn().map(isLoggedIn => {
       if (!isLoggedIn) {
+        this.notificationService.show(`You're not authorized to view this page.`);
         // TODO: redirect to error page
         this.router.navigate(['/']);
       }