Rescue nil in Albums

app/controllers/admin/sites_controller.rb

@@ -21,7 +21,7 @@ class Admin::SitesController < OrbitBackendController
   end
 
   def update
-    params[:site][:defalut_locale] = "zh_tw" if params[:site][:default_locale].blank?
+    params[:site][:defalut_locale] = nil if params[:site][:default_locale].blank?
     @site.update_attributes(params[:site])
     redirect_to :back
   end