diff --git a/lib/proposals_discussion_plugin/api.rb b/lib/proposals_discussion_plugin/api.rb
index 8e5cdd1..e0e74fb 100644
--- a/lib/proposals_discussion_plugin/api.rb
+++ b/lib/proposals_discussion_plugin/api.rb
@@ -6,7 +6,7 @@ class ProposalsDiscussionPlugin::API < Grape::API
     get ':id/ranking' do
       article = find_article(environment.articles, params[:id])
       current_page = paginate(article.ranking)
-      present(current_page, :with => Noosfero::API::Entities::RankingItem)
+      present(current_page, :with => Api::Entities::RankingItem)
       #FIXME find a better way to get updated_at date
       present :updated_at, current_page.blank? ? DateTime.now : current_page.first.updated_at
     end
--
libgit2 0.21.2