diff --git a/npm/ng-packs/packages/core/src/lib/abstracts/auth.guard.ts b/npm/ng-packs/packages/core/src/lib/abstracts/auth.guard.ts
index 023b8110dc..fff0bdb8f5 100644
--- a/npm/ng-packs/packages/core/src/lib/abstracts/auth.guard.ts
+++ b/npm/ng-packs/packages/core/src/lib/abstracts/auth.guard.ts
@@ -4,12 +4,10 @@ import { Injectable } from '@angular/core';
 @Injectable({
   providedIn: 'root',
 })
-export class AuthGuard implements CanActivate, IAuthGuard {
+export class AuthGuard implements IAuthGuard {
   canActivate(): Observable<boolean> | boolean | UrlTree {
     console.error('You should add @abp/ng-oauth packages or create your own auth packages.');
     return false;
   }
 }
-export interface IAuthGuard {
-  canActivate(): Observable<boolean> | boolean | UrlTree;
-}
+export interface IAuthGuard extends CanActivate {}