diff --git a/lib/devise_google_authenticator.rb b/lib/devise_google_authenticator.rb
index 9cd1b3e..b2c590f 100644
--- a/lib/devise_google_authenticator.rb
+++ b/lib/devise_google_authenticator.rb
@@ -16,7 +16,7 @@ module Devise # :nodoc:
 	@@ga_remembertime = 1.month
 
 	mattr_accessor :ga_appname
-	@@ga_appname = Rails.application.class.parent_name
+	@@ga_appname = Rails.application.class.module_parent_name
 
 	mattr_accessor :ga_bypass_signup
 	@@ga_bypass_signup = false
@@ -36,4 +36,4 @@ module DeviseGoogleAuthenticator
 require 'devise_google_authenticatable/controllers/helpers'
 ActionView::Base.send :include, DeviseGoogleAuthenticator::Controllers::Helpers
 
-Devise.add_module :google_authenticatable, :controller => :google_authenticatable, :model => 'devise_google_authenticatable/models/google_authenticatable', :route => :displayqr
\ No newline at end of file
+Devise.add_module :google_authenticatable, :controller => :google_authenticatable, :model => 'devise_google_authenticatable/models/google_authenticatable', :route => :displayqr