1 files changed, 5 insertions, 1 deletions
diff --git a/actionmailer/lib/action_mailer/mail_helper.rb b/actionmailer/lib/action_mailer/mail_helper.rb
index ec84256491..8d6e082d02 100644
--- a/actionmailer/lib/action_mailer/mail_helper.rb
+++ b/actionmailer/lib/action_mailer/mail_helper.rb
@@ -1,4 +1,7 @@
 module ActionMailer
+  # Provides helper methods for ActionMailer::Base that can be used for easily
+  # formatting messages, accessing mailer or message instances, and the
+  # attachments list.
   module MailHelper
     # Take the text and format it, indented two spaces for each line, and
     # wrapped at 72 columns.
@@ -46,8 +49,9 @@ module ActionMailer
         end
       end
 
+      indentation = " " * indent
       sentences.map { |sentence|
-        "#{" " * indent}#{sentence.join(' ')}"
+        "#{indentation}#{sentence.join(' ')}"
       }.join "\n"
     end
   end