--- src/usr.bin/make/make.1	2007/05/17 08:19:02	1.30
+++ src/usr.bin/make/make.1	2007/07/30 22:11:33	1.31
@@ -1497,7 +1497,8 @@ in
 .Sh HISTORY
 A
 .Nm
-command appeared in PWB UNIX.
+command appeared in PWB
+.Ux .
 .Sh BUGS
 The determination of
 .Va .OBJDIR