diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 1218f00e5b..a65991e4db 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -9361,6 +9361,7 @@ dialer:*:68:
 network:*:69:
 pgsql:*:70:
 simscan:*:74:
+audit:*:77:
 www:*:80:
 qnofiles:*:81:
 qmail:*:82: