diff --git a/app/controllers/personal_conferences_controller.rb b/app/controllers/personal_conferences_controller.rb
index a8ea973..c32d2b8 100644
--- a/app/controllers/personal_conferences_controller.rb
+++ b/app/controllers/personal_conferences_controller.rb
@@ -40,6 +40,8 @@ class PersonalConferencesController < ApplicationController
           writing_conferences_show = writing_conferences_temp.select {|value| value.send("publication_date").strftime("%Y/%m").collect{|x| x.title}.join(', ').include? params[:keywords]}
       when "author_type"
           writing_conferences_show = writing_conferences_temp.select {|value| value.conference_author_types.collect{|cat| cat.title}.join(", ").include? params[:keywords]}
+      when "language"
+          writing_conferences_show = writing_conferences_temp.select {|value| (!value.language.nil? ? t("#{value.language}") : "").include? params[:keywords]}
       else
           writing_conferences_show = writing_conferences_temp.select {|value| value.send(params[:selectbox]).to_s.include? params[:keywords]}
       end