diff --git a/emulators/fs-uae/Makefile b/emulators/fs-uae/Makefile
index 21cd477f23cf..061f2f3f6fa3 100644
--- a/emulators/fs-uae/Makefile
+++ b/emulators/fs-uae/Makefile
@@ -2,38 +2,37 @@
 # $FreeBSD$
 
 PORTNAME=	fs-uae
-PORTVERSION=	2.8.4
+PORTVERSION?=	2.8.4
 CATEGORIES=	emulators
-MASTER_SITES=	http://fs-uae.net/stable/${PORTVERSION}/
+MASTER_SITES?=	http://fs-uae.net/stable/${PORTVERSION}/
 
-MAINTAINER=	tomse@oagd.net
-COMMENT=	Amiga emulator
+MAINTAINER?=	tomse@oagd.net
+COMMENT?=	Amiga emulator
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-CONFLICTS_INSTALL=	fs-uae-devel-[0-9]*
+CONFLICTS_INSTALL?=	fs-uae-devel-[0-9]*
 
-BUILD_DEPENDS=	zip:archivers/zip
+BUILD_DEPENDS?=	zip:archivers/zip
 
-LIB_DEPENDS=	libpng.so:graphics/png \
+LIB_DEPENDS?=	libpng.so:graphics/png \
 		libopenal.so:audio/openal-soft \
 		libmpeg2.so:multimedia/libmpeg2
 
-USES=		desktop-file-utils gettext gl gmake \
+USES?=		desktop-file-utils gettext gl gmake \
 		gnome localbase pkgconfig shared-mime-info
 
 USE_SDL=	sdl2
 USE_GL=		gl
 USE_GNOME=	glib20
 USE_XORG=	x11
-USE_GCC=	any
 
 LLD_UNSAFE=	yes
 INSTALLS_ICONS=	yes
 
 GNU_CONFIGURE=	yes
-CONFIGURE_ARGS=	--disable-jit
+CONFIGURE_ARGS?=--disable-jit
 CFLAGS+=	-Wno-c++11-narrowing
 
 OPTIONS_DEFINE=	DOCS