diff --git a/src/app/authentication.service.ts b/src/app/authentication.service.ts
index 0e43df89ea56a74471f68a05ab0e64483714e0c4..4c84d948051cce5bad63c41cdc181ee3ff1c750f 100644
--- a/src/app/authentication.service.ts
+++ b/src/app/authentication.service.ts
@@ -22,6 +22,10 @@ export class AuthenticationService {
     return of(true);
   }
 
+  logout() {
+    this.mockUser = null;
+  }
+
   getUser(): Observable<User> {
     return of(this.mockUser);
   }