diff --git a/app/helpers/auth_helper.rb b/app/helpers/auth_helper.rb
index bdc662a..6b3c810 100644
--- a/app/helpers/auth_helper.rb
+++ b/app/helpers/auth_helper.rb
@@ -13,6 +13,7 @@ module AuthHelper
   def require_user
     return unless session[:token].nil?
     if !User.current.logged?
+      flash[:error] = t :notice_forbidden
       render_403
     end
   end
@@ -27,6 +28,7 @@ module AuthHelper
   
   def check_permission(permission)
     if !allowed_to?(permission)
+      flash[:error] = t :notice_forbidden
       render_403
     end
   end
@@ -34,6 +36,7 @@ module AuthHelper
   
   def global_check_permission(permission)
     if !globaly_allowed_to?(permission)
+      flash[:error] = t :notice_forbidden
       render_403
     end
   end