diff --git a/app/controllers/admin/sub_roles_controller.rb b/app/controllers/admin/sub_roles_controller.rb
index e39f783d..f28149ea 100644
--- a/app/controllers/admin/sub_roles_controller.rb
+++ b/app/controllers/admin/sub_roles_controller.rb
@@ -1,4 +1,4 @@
-class Admin::SubRolesController < RolesController
+class Admin::SubRolesController < Admin::RolesController
   
   
 end
diff --git a/app/models/item.rb b/app/models/item.rb
index a670435f..17880e4a 100644
--- a/app/models/item.rb
+++ b/app/models/item.rb
@@ -12,7 +12,7 @@ class Item
   field :enabled_for, :type => Array, :default => nil
   field :menu_enabled_for, :type => Array, :default => nil
   field :title, localize: true
-  field :sitemap_enabled, :type => Hash
+  field :sitemap_enabled, :type => Hash, :default => {}
 
  
   validates_format_of :name, :with => /^[0-9a-zA-Z\-_]+$/
@@ -57,7 +57,7 @@ class Item
   end
 
   def show_in_sitemap_for(locale)
-    if sitemap_enabled && !sitemap_enabled[locale].blank?
+    if !sitemap_enabled.blank? && !sitemap_enabled[locale].blank?
       sitemap_enabled[locale].eql?('true') ? true : false
     else
       true
diff --git a/lib/tasks/migrate.rake b/lib/tasks/migrate.rake
index 0c7d6148..bb92e72e 100644
--- a/lib/tasks/migrate.rake
+++ b/lib/tasks/migrate.rake
@@ -307,7 +307,7 @@ namespace :migrate do
 
   task :sitemap_i18n => :environment do
     Item.all.each do |item|
-      item.sitemap_enabled = item.sitemap_enabled ? {'en' => 'true', 'zh_tw' => 'true'} : nil
+      item.sitemap_enabled = item.sitemap_enabled ? {'en' => 'true', 'zh_tw' => 'true'} : {}
       item.save
     end
   end