gistfile1.diff

diff --git a/lib/sinatra_warden/sinatra.rb b/lib/sinatra_warden/sinatra.rb
index a6bf5e3..652bdd6 100644
--- a/lib/sinatra_warden/sinatra.rb
+++ b/lib/sinatra_warden/sinatra.rb
@@ -35,7 +35,10 @@ module Sinatra
 
     def self.registered(app)
       app.helpers Warden::Helpers
-      
+      app.use Warden::Manager do |manager|
+        manager.failure_app = app
+      end
+
       app.set :auth_failure_path, '/'
       app.set :auth_success_path, lambda{ back }