diff --git a/app/controllers/favorites_controller.rb b/app/controllers/favorites_controller.rb
index 73b111724..6dce03186 100644
--- a/app/controllers/favorites_controller.rb
+++ b/app/controllers/favorites_controller.rb
@@ -1,13 +1,18 @@
 class FavoritesController < ApplicationController
   before_filter :member_only
+  respond_to :html, :xml, :json
 
   def index
     if params[:tags]
       redirect_to(posts_path(:tags => params[:tags]))
-    elsif params[:user_id]
-      @favorite_set = PostSets::Favorite.new(User.find(params[:user_id]), params[:page], params)
     else
-      @favorite_set = PostSets::Favorite.new(CurrentUser.user, params[:page], params)
+      user_id = params[:user_id] || CurrentUser.user.id
+      @favorite_set = PostSets::Favorite.new(user_id, params[:page], params)
+      respond_with(@favorite_set.posts) do |format|
+        format.xml do
+          render :xml => @favorite_set.posts.to_xml(:root => "posts")
+        end
+      end
     end
   end