--- backgammon/teachgammon/Makefile.orig	2019-03-07 17:01:43 UTC
+++ backgammon/teachgammon/Makefile
@@ -1,7 +1,7 @@
 #	@(#)Makefile	8.1 (Berkeley) 5/31/93
 
 PROG=	teachgammon
-NOMAN=	noman
+MK_MAN= no
 CFLAGS+=-DTEACHGAMMON_TEXT -I${.CURDIR}/../common_source
 SRCS=	allow.c board.c check.c data.c fancy.c init.c odds.c one.c save.c \
 	subs.c table.c teach.c ttext1.c ttext2.c tutor.c