diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index df4690fbae..ce91a63ae3 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -7372,6 +7372,10 @@ Reference: <http://www.freebsd.org/ports/portaudit/74a9541d-5d6c-11d8-80e3-00
502128
+
+ 6.0-CURRENT
+ 600000
+
6.0-CURRENT after permanently enabling PFIL_HOOKS
in the kernel.