diff --git a/emulators/dgen-sdl/Makefile b/emulators/dgen-sdl/Makefile
index 7ab9d208d643..78cdb27c77e0 100644
--- a/emulators/dgen-sdl/Makefile
+++ b/emulators/dgen-sdl/Makefile
@@ -1,25 +1,24 @@
 PORTNAME=	dgen-sdl
 PORTVERSION=	1.33
 PORTREVISION=	6
 CATEGORIES=	emulators
 MASTER_SITES=	SF/dgen/dgen/${PORTVERSION}
 
 MAINTAINER=	ak@FreeBSD.org
 COMMENT=	Wonderful Sega Genesis/MegaDrive emulator
 WWW=		https://dgen.sourceforge.net/
 
 USE_SDL=	sdl
 USE_GL=		glu
 USES=		gl gmake sdl
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 
 CONFIGURE_ARGS+=	--disable-asm
 
 PLIST_FILES=	bin/dgen \
 		bin/dgen_tobin \
 		share/man/man1/dgen.1.gz \
 		share/man/man1/dgen_tobin.1.gz \
 		share/man/man5/dgenrc.5.gz
 
 .include <bsd.port.mk>
diff --git a/games/xbill/Makefile b/games/xbill/Makefile
index 886d87e962e1..1758aaf496a7 100644
--- a/games/xbill/Makefile
+++ b/games/xbill/Makefile
@@ -1,53 +1,52 @@
 PORTNAME=	xbill
 PORTVERSION=	2.1
 PORTREVISION=	12
 CATEGORIES=	games
 MASTER_SITES=	http://www.xbill.org/download/
 
 MAINTAINER=	ak@FreeBSD.org
 COMMENT=	Save your computers from the evil clutches of Bill
 WWW=		http://www.xbill.org
 
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 CONFIGURE_ARGS=	--localstatedir=${SCORES_DIR} --disable-gtk
 
 SCORES_DIR?=	${DATADIR}/scores
 
 DESKTOP_ENTRIES="xBill" \
 		"Save your computers from the evil clutches of Bill" \
 		"${DATADIR}/pixmaps/icon.xpm" \
 		"xbill" \
 		"Game;ArcadeGame;" \
 		false
 
 PLIST_FILES=	bin/${PORTNAME} \
 		share/man/man6/${PORTNAME}.6.gz
 
 PORTDATA=	*
 
 USES=		xorg
 USE_XORG=	xt x11 sm ice xpm
 
 OPTIONS_SINGLE=	WIDGETSET
 OPTIONS_SINGLE_WIDGETSET=	ATHENA MOTIF
 OPTIONS_DEFAULT=	ATHENA
 
 ATHENA_DESC=	Athena widget set
 MOTIF_DESC=	Motif widget set
 
 ATHENA_CONFIGURE_ON=	--disable-motif
 ATHENA_USES=	xorg
 ATHENA_USE=	xorg=xaw,xmu
 
 MOTIF_CONFIGURE_ON=	--disable-athena
 MOTIF_USES=	motif
 
 post-patch:
 	@${REINPLACE_CMD} -e '/WIDGET_LIBS=/ s|-lXt|-lXt -lXpm|' \
 		${WRKSRC}/configure
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/xbill
 
 .include <bsd.port.mk>
diff --git a/x11-wm/vtwm/Makefile b/x11-wm/vtwm/Makefile
index a15515eeddb5..1ac8d79ade75 100644
--- a/x11-wm/vtwm/Makefile
+++ b/x11-wm/vtwm/Makefile
@@ -1,35 +1,34 @@
 PORTNAME=	vtwm
 PORTVERSION=	5.5.0
 PORTREVISION=	1
 CATEGORIES=	x11-wm
 MASTER_SITES=	SF/${PORTNAME}
 
 MAINTAINER=	ak@FreeBSD.org
 COMMENT=	Twm with a virtual desktop and optional Motif-like features
 WWW=		http://www.vtwm.org/
 
 LICENSE=	MIT
 
 LIB_DEPENDS=	libpng.so:graphics/png
 
 USES=	pkgconfig xorg
 
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=	${PREFIX}/share
 USE_XORG=	x11 xext xft xinerama xpm xmu xrandr
 
 PLIST_FILES=	bin/vtwm \
 		bin/nexpm \
 		etc/system.vtwmrc \
 		share/man/man1/vtwm.1.gz
 
 OPTIONS_DEFINE=	SOUND
 SOUND_DESC=	Sound support (via rplay)
 
 SOUND_CONFIGURE_ENABLE=	sound
 SOUND_LIB_DEPENDS=	librplay.so:audio/rplay
 
 pre-patch:
 	@${REINPLACE_CMD} -e 's|\$${datadir}/X11/vtwm|\$${prefix}/etc|' ${WRKSRC}/Makefile.in
 
 .include <bsd.port.mk>