diff --git a/app/models/book.rb b/app/models/book.rb
index f2f25b6..a038946 100644
--- a/app/models/book.rb
+++ b/app/models/book.rb
@@ -63,7 +63,7 @@ class Book
 
   def self.get_plugin_datas_to_member(datas)
     page = Page.where(:module => "personal_book").first rescue nil
-    if page.custom_string_field == "table"
+    if !page.nil? && page.custom_string_field == "table"
       fields_to_show = [
         "authors",
         "book_title",