diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 9cd7843ffd..ecbd00f708 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -6675,6 +6675,7 @@ slimserv:*:104:104:Slim Devices SlimServer pseudo-user:/nonexistent:/sbin/nologi
 fido:*:111:111:Fido System:/usr/local/fido:/bin/sh
 postfix:*:125:125:Postfix Mail System:/var/spool/postfix:/sbin/nologin
 rbldns:*:153:153:rbldnsd pseudo-user:/nonexistent:/sbin/nologin
+sfs:*:171:171:Self-Certifying File System:/nonexistent:/sbin/nologin
 agk:*:172:172:AquaGateKeeper:/nonexistent:/nonexistent
 ldap:*:389:389:OpenLDAP Server:/nonexistent:/sbin/nologin
 drweb:*:426:426:Dr.Web Mail Scanner:/nonexistent:/sbin/nologin