--- src/lib/libc/sys/socketpair.2	2006/02/17 19:35:06	1.3
+++ src/lib/libc/sys/socketpair.2	2007/07/30 22:11:33	1.4
@@ -92,5 +92,5 @@ function call appeared in
 .Bx 4.2 .
 .Sh BUGS
 This call is currently implemented only for the
-.Tn UNIX
+.Ux
 domain.