diff --git a/vendor/built_in_modules/personal_conference/app/controllers/panel/personal_conference/desktop/conference_co_author_relations_controller.rb b/vendor/built_in_modules/personal_conference/app/controllers/panel/personal_conference/desktop/conference_co_author_relations_controller.rb
index c55186cb..3bfe63e8 100644
--- a/vendor/built_in_modules/personal_conference/app/controllers/panel/personal_conference/desktop/conference_co_author_relations_controller.rb
+++ b/vendor/built_in_modules/personal_conference/app/controllers/panel/personal_conference/desktop/conference_co_author_relations_controller.rb
@@ -55,9 +55,9 @@ class Panel::PersonalConference::Desktop::ConferenceCoAuthorRelationsController
   private
 
   def reset_co_author_relation
-    co_author = ConferenceCoAuthor.where(co_author_relations_id: @co_author_relation.id)
+    co_author = ConferenceCoAuthor.where(conference_co_author_relations_id: @conference_co_author_relation.id)
     co_author.map do |c|
-      c.update_attributes(co_author_relations_id: nil)
+      c.update_attributes(conference_co_author_relations_id: nil)
     end
   end
 end
diff --git a/vendor/built_in_modules/personal_journal/app/controllers/panel/personal_journal/desktop/journal_co_author_relations_controller.rb b/vendor/built_in_modules/personal_journal/app/controllers/panel/personal_journal/desktop/journal_co_author_relations_controller.rb
index d6b19b92..2cb72eeb 100644
--- a/vendor/built_in_modules/personal_journal/app/controllers/panel/personal_journal/desktop/journal_co_author_relations_controller.rb
+++ b/vendor/built_in_modules/personal_journal/app/controllers/panel/personal_journal/desktop/journal_co_author_relations_controller.rb
@@ -55,9 +55,9 @@ class Panel::PersonalJournal::Desktop::JournalCoAuthorRelationsController < Appl
   private
 
   def reset_co_author_relation
-    co_author = JournalCoAuthor.where(co_author_relations_id: @co_author_relation.id)
+    co_author = JournalCoAuthor.where(journal_co_author_relations_id: @journal_co_author_relation.id)
     co_author.map do |c|
-      c.update_attributes(co_author_relations_id: nil)
+      c.update_attributes(journal_co_author_relations_id: nil)
     end
   end
 end