diff --git a/app/models/event.rb b/app/models/event.rb
index 3c9fe4f1..dc7202c2 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 class Event < ApplicationRecord
+  include ActionView::Helpers::NumberHelper # for number_with_precision
   include ActiveRecord::Transitions
   include RevisionCount
   has_paper_trail on: [:create, :update], ignore: [:updated_at, :guid, :week], meta: { conference_id: :conference_id }