diff --git a/app/helpers/mailer_helper.rb b/app/helpers/mailer_helper.rb
deleted file mode 100644
index b7e3a8da38c482db3b9ce3a2f3d0a88987b72198..0000000000000000000000000000000000000000
--- a/app/helpers/mailer_helper.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-# frozen_string_literal: true
-
-module MailerHelper
-end
diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index bf161b9be040d542b0e4974985d6c60513a64b60..cc585c3b76a8ee2f227cad67b34583e3a9cb8373 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -5,7 +5,6 @@ class ApplicationMailer < ActionMailer::Base
 
   helper :application
   helper :instance
-  helper :mailer
 
   protected