diff --git a/app/controllers/catalog_controller.rb b/app/controllers/catalog_controller.rb
index e49c79c49..a94ff1c9b 100644
--- a/app/controllers/catalog_controller.rb
+++ b/app/controllers/catalog_controller.rb
@@ -1,5 +1,6 @@
 # -*- encoding : utf-8 -*-
 require 'blacklight/catalog'
+require 'kithe/blacklight_tools/bulk_loading_search_service'
 
 class CatalogController < ApplicationController
   include BlacklightAdvancedSearch::Controller