diff --git a/lib/ext/entities.rb b/lib/ext/entities.rb
index 9d430a1..40dcd98 100644
--- a/lib/ext/entities.rb
+++ b/lib/ext/entities.rb
@@ -1,24 +1,22 @@
-require File.join(Rails.root,'lib','noosfero','api','entities')
-module Noosfero
-  module API
-    module Entities
+require_dependency 'api/entities'
 
-      class Article < ArticleBase
-        expose :ranking_position
-        #FIXME see why children counter cache is not working
-        expose :amount_of_children do |article, options|
-          article.children.count
-        end
-      end
+module Api
+  module Entities
 
-      class RankingItem < Entity
-        root :proposals, :proposal
-        expose :id, :position, :abstract, :body, :votes_for, :votes_against
-        expose :hits, :effective_support, :proposal_id, :created_at
-        expose :updated_at, :slug, :categories, :parent
+    class Article < ArticleBase
+      expose :ranking_position
+      #FIXME see why children counter cache is not working
+      expose :amount_of_children do |article, options|
+        article.children.count
       end
+    end
 
+    class RankingItem < Entity
+      root :proposals, :proposal
+      expose :id, :position, :abstract, :body, :votes_for, :votes_against
+      expose :hits, :effective_support, :proposal_id, :created_at
+      expose :updated_at, :slug, :categories, :parent
     end
-  end
 
+  end
 end
--
libgit2 0.21.2