diff --git a/lib/rack/openid.rb b/lib/rack/openid.rb
index 1323541..6d1dd01 100644
--- a/lib/rack/openid.rb
+++ b/lib/rack/openid.rb
@@ -91,7 +91,7 @@ def begin_authentication(env, qs)
           return redirect_to(url)
         rescue ::OpenID::OpenIDError, Timeout::Error => e
           env[RESPONSE] = MissingResponse.new
-          return self.call(env)
+          return @app.call(env)
         end
       end