diff --git a/app/helpers/admin/personal_books_helper.rb b/app/helpers/admin/personal_books_helper.rb
index b834642..185d25d 100644
--- a/app/helpers/admin/personal_books_helper.rb
+++ b/app/helpers/admin/personal_books_helper.rb
@@ -10,7 +10,7 @@ module Admin::PersonalBooksHelper
     end
     full_authors_names = get_member(book).collect do |member|
       member_name = member.name
-      idx = authors_names.index{|a| a.match(/(^|[ \(\[])#{member_name}([ \)\]\*]|$)/)}
+      idx = authors_names.index{|a| a.match(/(^|[ \(\[])#{::Regexp.escape(member_name)}([ \)\]\*]|$)/)}
       if idx
         member_name = authors_names[idx]
         authors_names[idx] = nil
@@ -31,7 +31,7 @@ module Admin::PersonalBooksHelper
     end
     full_authors = get_member(book).collect do |member|
       member_name = member.name
-      idx = authors_names.index{|a| a.match(/(^|[ \(\[])#{member_name}([ \)\]\*]|$)/)}
+      idx = authors_names.index{|a| a.match(/(^|[ \(\[])#{::Regexp.escape(member_name)}([ \)\]\*]|$)/)}
       if idx
         member_name = authors_names[idx]
         authors_names[idx] = nil