diff --git a/graphics/sane-airscan/Makefile b/graphics/sane-airscan/Makefile
index 667928a4931f..b8a6a3bcb1bd 100644
--- a/graphics/sane-airscan/Makefile
+++ b/graphics/sane-airscan/Makefile
@@ -1,27 +1,30 @@
 PORTNAME=	sane-airscan
+PORTREVISION=	1
 DISTVERSION=	0.99.36
 CATEGORIES=	graphics
 
 MAINTAINER=	henry.hu.sh@gmail.com
 COMMENT=	SANE backend for AirScan (eSCL) and WSD document scanners
 WWW=		https://github.com/alexpevzner/sane-airscan
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	sane-backends>0:graphics/sane-backends
 LIB_DEPENDS=	libavahi-client.so:net/avahi-app \
 		libgnutls.so:security/gnutls \
 		libpng.so:graphics/png \
 		libtiff.so:graphics/tiff
 
 USES=		gnome jpeg meson pkgconfig
 USE_GITHUB=	yes
 GH_ACCOUNT=	alexpevzner
 USE_GNOME=	libxml2
 
+CFLAGS+=	-D CONFIG_SANE_CONFIG_DIR="\\\"${PREFIX}/etc/sane.d\\\""
+
 post-install:
 	@${MV} ${STAGEDIR}${PREFIX}/etc/sane.d/airscan.conf \
 		${STAGEDIR}${PREFIX}/etc/sane.d/airscan.conf.sample
 
 .include <bsd.port.mk>