diff --git a/app/models/syllabus.rb b/app/models/syllabus.rb
index b046ce2cd..6bd770d5d 100644
--- a/app/models/syllabus.rb
+++ b/app/models/syllabus.rb
@@ -2,6 +2,7 @@
 class Syllabus < ActiveRecord::Base
   include Redmine::SafeAttributes
   include ApplicationHelper
+  include Elasticsearch::Model
   acts_as_taggable
   acts_as_attachable
   has_many_kindeditor_assets :assets, :dependent => :destroy