diff --git a/app/models/writing_conference.rb b/app/models/writing_conference.rb
index 5b53a6d..be738b4 100644
--- a/app/models/writing_conference.rb
+++ b/app/models/writing_conference.rb
@@ -96,7 +96,9 @@ class WritingConference
       if (self.fields[t].type.to_s == "String" rescue false)
         fields_to_remove << t if (datas.where(t.to_sym.ne => nil).or(t.to_sym.ne => "").count == 0 rescue false)
       else
+        t = "conference_author_types" if t == "author_type"
         fields_to_remove << t if (datas.where(t.to_sym.ne => nil).count == 0 rescue false)
+        t = "author_type" if t == "conference_author_types"
       end
       pd_title <<  {
           "plugin_data_title" => I18n.t("personal_conference.#{t}")