diff --git a/gnu/usr.bin/groff/tmac/mdoc.local b/gnu/usr.bin/groff/tmac/mdoc.local
index 343209e685d8..b11f4b6d8dae 100644
--- a/gnu/usr.bin/groff/tmac/mdoc.local
+++ b/gnu/usr.bin/groff/tmac/mdoc.local
@@ -52,6 +52,7 @@
 .ds doc-operating-system-FreeBSD-8.3    8.3
 .ds doc-operating-system-FreeBSD-8.4    8.4
 .ds doc-operating-system-FreeBSD-9.1    9.1
+.ds doc-operating-system-FreeBSD-9.2    9.2
 .ds doc-operating-system-FreeBSD-10.0   10.0
 .
 .\" Definitions not (yet) in doc-syms