diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index dcdcfc3e4..f936f2cba 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -1,6 +1,8 @@
 # -*- encoding : utf-8 -*-
 
 class UserMailer < ActionMailer::Base
+  add_template_helper ActivityFeedsHelper
+
   default :from => "\"#{APP_CONFIG['project_name']}\" <#{APP_CONFIG['do-not-reply-email']}>"
   default_url_options.merge!(:protocol => 'https') if APP_CONFIG['mailer_https_url']