diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index a1357d89..75a2e960 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -16,9 +16,9 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 class Mailer < ActionMailer::Base
-  helper ApplicationHelper
-  helper IssuesHelper
-  helper CustomFieldsHelper
+  helper :application
+  helper :issues
+  helper :custom_fields
   
   include ActionController::UrlWriter