diff --git a/lib/devise_google_authenticatable/controllers/helpers.rb b/lib/devise_google_authenticatable/controllers/helpers.rb
index 12c0486..ef7db55 100644
--- a/lib/devise_google_authenticatable/controllers/helpers.rb
+++ b/lib/devise_google_authenticatable/controllers/helpers.rb
@@ -3,21 +3,21 @@ module Controllers # :nodoc:
     module Helpers # :nodoc:
       def google_authenticator_qrcode(user,qualifier=nil)
         username = username_from_email(user.email)
-        app = Rails.application.class.parent_name
+        app = user.class.ga_appname || Rails.application.class.parent_name
         data = "otpauth://totp/#{otpauth_user(username, app, qualifier)}?secret=#{user.gauth_secret}"
         data = Rack::Utils.escape(data)
         url = "https://chart.googleapis.com/chart?chs=200x200&chld=M|0&cht=qr&chl=#{data}"
         return image_tag(url, :alt => 'Google Authenticator QRCode')
       end
-      
+
       def otpauth_user(username, app, qualifier=nil)
         "#{username}@#{app}#{qualifier}"
-      end 
+      end
 
       def username_from_email(email)
         (/^(.*)@/).match(email)[1]
       end
-      
+
     end
   end
 end
diff --git a/lib/devise_google_authenticatable/models/google_authenticatable.rb b/lib/devise_google_authenticatable/models/google_authenticatable.rb
index 86fa122..f86e26b 100644
--- a/lib/devise_google_authenticatable/models/google_authenticatable.rb
+++ b/lib/devise_google_authenticatable/models/google_authenticatable.rb
@@ -88,7 +88,7 @@ module ClassMethods # :nodoc:
         def find_by_gauth_tmp(gauth_tmp)
           where(gauth_tmp: gauth_tmp).first
         end
-        ::Devise::Models.config(self, :ga_timeout, :ga_timedrift, :ga_remembertime)
+        ::Devise::Models.config(self, :ga_timeout, :ga_timedrift, :ga_remembertime, :ga_appname)
       end
     end
   end
diff --git a/lib/devise_google_authenticator.rb b/lib/devise_google_authenticator.rb
index ed5d485..99cdb79 100644
--- a/lib/devise_google_authenticator.rb
+++ b/lib/devise_google_authenticator.rb
@@ -14,6 +14,9 @@ module Devise # :nodoc:
 
 	mattr_accessor :ga_remembertime
 	@@ga_remembertime = 1.month
+
+  mattr_accessor :ga_appname
+  @@ga_appname = Rails.application.class.parent_name
 end
 
 # a security extension for devise
diff --git a/lib/generators/devise_google_authenticator/install_generator.rb b/lib/generators/devise_google_authenticator/install_generator.rb
index 80ce9d1..7ef7710 100644
--- a/lib/generators/devise_google_authenticator/install_generator.rb
+++ b/lib/generators/devise_google_authenticator/install_generator.rb
@@ -15,6 +15,9 @@ def add_configs
         "  # Change setting to how long to remember device before requiring another token. Change to nil to turn feature off.\n" +
         "  # To change the default, uncomment and change the below:\n" +
         "  # config.ga_remembertime = 1.month\n\n" +
+        "  # Change setting to assign the application name used by code generator. Defaults to Rails.application.class.parent_name.\n" +
+        "  # To change the default, uncomment and change the below:\n" +
+        "  # config.ga_appname = 'example.com'\n\n" +
         "\n", :before => /end[ |\n|]+\Z/
       end
 
diff --git a/test/models_test.rb b/test/models_test.rb
index 6e46b9c..60f4deb 100644
--- a/test/models_test.rb
+++ b/test/models_test.rb
@@ -28,6 +28,15 @@ def assert_include_modules(klass, *modules)
     assert_equal 3, User.ga_timedrift
   end
 
+  test 'should have a new value for ga_appname' do
+    old_ga_appname = User.ga_appname
+    User.ga_appname = "test.app"
+
+    assert_equal "test.app", User.ga_appname
+
+    User.ga_appname = old_ga_appname
+  end
+
   test 'should set a new value for ga_timeout' do
     old_ga_timeout = User.ga_timeout
     User.ga_timeout = 1.minutes