diff --git a/gnu/usr.bin/groff/tmac/mdoc.local b/gnu/usr.bin/groff/tmac/mdoc.local
index daf54b85a57e..1db5aa8b2b27 100644
--- a/gnu/usr.bin/groff/tmac/mdoc.local
+++ b/gnu/usr.bin/groff/tmac/mdoc.local
@@ -72,6 +72,8 @@
 .ds doc-operating-system-FreeBSD-6.3    6.3
 .ds doc-operating-system-FreeBSD-6.4    6.4
 .ds doc-operating-system-FreeBSD-7.1    7.1
+.ds doc-operating-system-FreeBSD-7.2    7.2
+.ds doc-operating-system-FreeBSD-7.3    7.3
 .ds doc-operating-system-FreeBSD-8.0    8.0
 .ds doc-operating-system-FreeBSD-9.0    9.0
 .