diff --git a/sysutils/httm/Makefile b/sysutils/httm/Makefile
index 63ee139f9748..0adb53da6a7b 100644
--- a/sysutils/httm/Makefile
+++ b/sysutils/httm/Makefile
@@ -1,20 +1,23 @@
 PORTNAME=	httm
 DISTVERSION=	0.37.9
 CATEGORIES=	sysutils
 
 MAINTAINER=	bofh@FreeBSD.org
 COMMENT=	Dream of a CLI Time Machine
 WWW=		https://github.com/kimono-koans/httm
 
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+NOT_FOR_ARCHS=	i386
+NOT_FOR_ARCHS_REASON=	Fails to build: non-binding let on a synchronization lock
+
 USES=		cargo
 USE_GITHUB=	yes
 GH_ACCOUNT=	kimono-koans
 
 .include "${.CURDIR}/Makefile.cargo"
 
 PLIST_FILES=	bin/httm
 
 .include <bsd.port.mk>