diff --git a/railties/lib/rails_generator/generators/components/mailer/templates/mailer.rb b/railties/lib/rails_generator/generators/components/mailer/templates/mailer.rb
index 81c19fa76d10ffa660265114ec44923b09a03579..127495fcbbe026ac9e82d8efe0663267d8530449 100644
--- a/railties/lib/rails_generator/generators/components/mailer/templates/mailer.rb
+++ b/railties/lib/rails_generator/generators/components/mailer/templates/mailer.rb
@@ -1,12 +1,12 @@
 class <%= class_name %> < ActionMailer::Base
 <% for action in actions -%>
 
-  def <%= action %>(sent_on = Time.now)
+  def <%= action %>(sent_at = Time.now)
     @subject    = '<%= class_name %>#<%= action %>'
     @body       = {}
     @recipients = ''
     @from       = ''
-    @sent_on    = sent_on
+    @sent_on    = sent_at
     @headers    = {}
   end
 <% end -%>