diff --git a/sysutils/rdfind/Makefile b/sysutils/rdfind/Makefile
index bd8d76180c7f..1b5121ea1cb5 100644
--- a/sysutils/rdfind/Makefile
+++ b/sysutils/rdfind/Makefile
@@ -1,25 +1,33 @@
 PORTNAME=	rdfind
 DISTVERSION=	1.8.0
 CATEGORIES=	sysutils
 MASTER_SITES=	https://rdfind.pauldreik.se/
 
 MAINTAINER=	dtxdf@FreeBSD.org
 COMMENT=	Utility to find duplicate files based on their content
 WWW=		https://rdfind.pauldreik.se/
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libnettle.so:security/nettle
 
 USES=		autoreconf localbase:ldflags
 GNU_CONFIGURE=	yes
 GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 
+OPTIONS_DEFINE=	XXHASH
+OPTIONS_DEFAULT=XXHASH
+
+XXHASH_DESC=		Enable support for faster xxhash128 checksum
+XXHASH_BUILD_DEPENDS=	xxhash>0:devel/xxhash
+XXHASH_RUN_DEPENDS=	xxhash>0:devel/xxhash
+XXHASH_CONFIGURE_WITH=	xxhash
+
 PLIST_FILES=	bin/${PORTNAME} \
 		share/man/man1/${PORTNAME}.1.gz
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
 
 .include <bsd.port.mk>