diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index fff26da715..45995fcb12 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -7146,6 +7146,7 @@ agk:*:172:172:AquaGateKeeper:/nonexistent:/nonexistent
 moinmoin:*:192:192:MoinMoin User:/nonexistent:/sbin/nologin
 ldap:*:389:389:OpenLDAP Server:/nonexistent:/sbin/nologin
 drweb:*:426:426:Dr.Web Mail Scanner:/nonexistent:/sbin/nologin
+courier:*:465:465:Courier Mail Server:/nonexistent:/sbin/nologin
 qtss:*:554:554:Darwin Streaming Server:/nonexistent:/sbin/nologin
 ircdru:*:555:555:Russian hybrid IRC server:/nonexistent:/bin/sh
 bacula:*:910:910:Bacula Daemon:/var/db/bacula:/sbin/nologin</programlisting>
@@ -7171,6 +7172,7 @@ postfix:*:125:
 maildrop:*:126:
 rbldns:*:153:
 moinmoin:*:192:
+courier:*:465:
 qtss:*:554:
 ircdru:*:555:</programlisting>