diff --git a/app/controllers/personal_books_controller.rb b/app/controllers/personal_books_controller.rb
index 94103f4..5204b63 100644
--- a/app/controllers/personal_books_controller.rb
+++ b/app/controllers/personal_books_controller.rb
@@ -37,7 +37,7 @@ class PersonalBooksController < ApplicationController
       when "author_type"
           books_show = books_temp.select {|value| value.book_author_types.collect{|bat| bat.title}.join(", ").include? params[:keywords]}
       when "language"
-          books_show = books_temp.select {|value| (!value.language.nil? ? I18n.t("personal_book.#{value.language}") : "").include? params[:keywords]}
+          books_show = books_temp.select {|value| (!value.language.nil? ? t("#{value.language}") : "").include? params[:keywords]}
       else
           books_show = books_temp.select {|value| value.send(params[:selectbox]).to_s.include? params[:keywords]}
       end
@@ -64,11 +64,11 @@ class PersonalBooksController < ApplicationController
            t << {"value" => "<a href='#{OrbitHelper.url_to_show(book.to_param)}'>#{book.create_link}</a>"}
           end
         when "publish_date", "publication_date"
-          t << {"value" => "book.publication_date.strftime('%Y/%m/%d')"}
+          t << {"value" => (!book.publication_date.nil? ? book.publication_date.strftime('%Y/%m/%d') : "")}
         when "author_type"
           t << {"value" => (book.book_author_types.collect{|bat| bat.title}.join(", ") rescue "")}
         when "language"
-          t << {"value" => (!book.language.nil? ? t("#{book.language}") : "" rescue "")}
+          t << {"value" => (!book.language.nil? ? t("#{book.language}") : "")}
         else
           t << {"value" => book.send(fs)}
         end