diff --git a/app/mailers/custom_mailer.rb b/app/mailers/custom_mailer.rb
index 732ef66..325a620 100644
--- a/app/mailers/custom_mailer.rb
+++ b/app/mailers/custom_mailer.rb
@@ -11,7 +11,7 @@
 #
 # Send email via Sidekiq:
 #
-#     CustomMailer.with(user: u, subject: "Important announcement", body: body).custom_message.deliver_later
+#     CustomMailer.with(user: user, subject: "Important announcement", body: body).custom_message.deliver_later
 #
 class CustomMailer < ApplicationMailer
   def custom_message