diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 0dc9852a61..98bbc9e189 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -9109,6 +9109,7 @@ _bbstored:*:505:505::0:0:BoxBackup Store Daemon:/nonexistent:/bin/sh
 qtss:*:554:554:Darwin Streaming Server:/nonexistent:/sbin/nologin
 ircdru:*:555:555:Russian hybrid IRC server:/nonexistent:/bin/sh
 messagebus:*:556:556:D-BUS Daemon User:/nonexistent:/sbin/nologin
+avahi:*:558:558:Avahi Daemon User:/nonexistent:/sbin/nologin
 bnetd:*:700:700:Bnetd user:/nonexistent:/sbin/nologin
 bopm:*:717:717:Blitzed Open Proxy Monitor:/nonexistent:/bin/sh
 bacula:*:910:910:Bacula Daemon:/var/db/bacula:/sbin/nologin</programlisting>
@@ -9183,6 +9184,7 @@ qtss:*:554:
 ircdru:*:555:
 messagebus:*:556:
 realtime:*:557:
+avahi:*:558:
 bnetd:*:700:
 bopm:*:717:
 bacula:*:910:</programlisting>