diff --git a/app/models/note_version.rb b/app/models/note_version.rb
index 5bbfadc81..ec7283d8f 100644
--- a/app/models/note_version.rb
+++ b/app/models/note_version.rb
@@ -29,7 +29,7 @@ class NoteVersion < ActiveRecord::Base
   end
 
   def previous
-    NoteVersion.where("note_id = ? and created_at < ?", note_id, created_at).order("created_at desc").first
+    NoteVersion.where("note_id = ? and updated_at < ?", note_id, updated_at).order("updated_at desc").first
   end
 
   def updater_name