diff --git a/app/controllers/personal_books_controller.rb b/app/controllers/personal_books_controller.rb
index 7a7abb9..c6524dc 100644
--- a/app/controllers/personal_books_controller.rb
+++ b/app/controllers/personal_books_controller.rb
@@ -29,8 +29,8 @@ class PersonalBooksController < ApplicationController
       books_temp = Book.where(:is_hidden=>false).sort_by{ |tp| [-tp[:year].to_i,-tp[:publication_date].to_i] }
       case params[:selectbox]
       when "book_title", "extracted_chapters", "default"
-        if params[:selectbox] == "dafault"
-          search_temp = 'book_title'
+        if params[:selectbox] == "default"
+          search_temp = "book_title"
         else
           search_temp = params[:selectbox]
           trans = params[:selectbox]