diff --git a/doc/source/firehose.rst b/doc/source/firehose.rst
index 170f7a9d61..49ead81076 100644
--- a/doc/source/firehose.rst
+++ b/doc/source/firehose.rst
@@ -150,7 +150,7 @@ on the firehose and print it to STDOUT
     client.loop_forever()
 
 IMAP and MX
------------
+===========
 
 We're using Cyrus as an IMAP server in order to consume launchpad bug
 events via email. The configuration of the admin password account and