diff --git a/net/pkt-gen/Makefile b/net/pkt-gen/Makefile
index c5e022560ced..e02534d447e2 100644
--- a/net/pkt-gen/Makefile
+++ b/net/pkt-gen/Makefile
@@ -1,37 +1,40 @@
 PORTNAME=	pkt-gen
 PORTVERSION=	g2023.03.22
 CATEGORIES=	net
 
 MAINTAINER=	olivier@FreeBSD.org
 COMMENT=	Packet sink/source using the netmap API
 WWW=		https://github.com/luigirizzo/netmap
 
 LICENSE=	BSD2CLAUSE
 
+NOT_FOR_ARCHS=	armv6 armv7 i386 mips powerpc
+NOT_FOR_ARCHS_REASON=	build error with time_t type on 32bit platforms
+
 USES=		gmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	luigirizzo
 GH_PROJECT=	netmap
 GH_TAGNAME=	0a53f85
 MAKEFILE=	GNUmakefile
 
 OPTIONS_DEFINE=	PCAP
 PCAP_DESC=	Support loading packets from pcap file
 OPTIONS_DEFAULT=	PCAP
 PCAP_MAKE_ARGS=	WITH_PCAP=1
 
 PLIST_FILES=	bin/pkt-gen \
 		bin/nmreplay
 
 do-build:
 	cd ${WRKSRC}/libnetmap && ${SETENV} ${MAKE_ENV} ${GMAKE} ${MAKE_ARGS} ${MAKE_FLAGS} ${MAKEFILE}
 	cd ${WRKSRC}/apps/pkt-gen && ${SETENV} ${MAKE_ENV} ${GMAKE} ${MAKE_ARGS} ${MAKE_FLAGS} ${MAKEFILE}
 	cd ${WRKSRC}/apps/nmreplay && ${SETENV} ${MAKE_ENV} ${GMAKE} ${MAKE_ARGS} ${MAKE_FLAGS} ${MAKEFILE}
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/apps/pkt-gen/pkt-gen \
 		${STAGEDIR}${PREFIX}/bin
 	${INSTALL_PROGRAM} ${WRKSRC}/apps/nmreplay/nmreplay \
 		${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>