diff --git a/benchmarks/lzbench/Makefile b/benchmarks/lzbench/Makefile
index 7ba7e581ae85..effaa5f3d436 100644
--- a/benchmarks/lzbench/Makefile
+++ b/benchmarks/lzbench/Makefile
@@ -1,37 +1,39 @@
 PORTNAME=	lzbench
 PORTVERSION=	2.0.1
 DISTVERSIONPREFIX=	v
 CATEGORIES=	benchmarks
 
 MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	In-memory benchmark of open-source LZ77/LZSS/LZMA compressors
 WWW=		https://github.com/inikep/lzbench
 
 USES=		compiler:c11 gmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	inikep
 ALL_TARGET=	${PORTNAME}
 
 PLIST_FILES=	bin/lzbench
 PORTDOCS=	CHANGELOG README.md
 
 OPTIONS_DEFINE=	DOCS
 
 post-patch:
 	@${REINPLACE_CMD} -e '/PROGOS/s,Linux,${OPSYS},' \
 		${WRKSRC}/_lzbench/lzbench.h
 	@${REINPLACE_CMD} -e 's,shell echo|$$(CC),& 2>/dev/null,' \
 		${WRKSRC}/Makefile
+	@${REINPLACE_CMD} -e '/^#if defined(__FreeBSD__)/,+1s,machine,sys,' \
+		${WRKSRC}/kanzi-cpp/src/Memory.hpp
 	@${REINPLACE_CMD} -e '/pithy_Load64/s,vld1_u64(,&(uint64_t *),' \
 		${WRKSRC}/pithy/pithy.cpp
 	@${REINPLACE_CMD} -e '/^#if/s,defined(__aarch64__),& ||\
 		__riscv_xlen == 64,' ${WRKSRC}/tornado/Common.h
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/lzbench ${STAGEDIR}${PREFIX}/bin
 
 do-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${PORTDOCS:S,^,${WRKSRC}/,} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>