diff --git a/math/kalc/Makefile b/math/kalc/Makefile
index bf3367af5586..1b4e9ea2feb8 100644
--- a/math/kalc/Makefile
+++ b/math/kalc/Makefile
@@ -1,71 +1,73 @@
 PORTNAME=	kalc
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.8.3
 CATEGORIES=	math
 PKGNAMESUFFIX=	-calculator
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Calculator for real and complex numbers, 2d/3d graphing, etc
 WWW=		https://github.com/bgkillas/kalc
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_i386=	compilation fails: error: Oops, mp_limb_t is 32 bits, but the assembler code in this configuration expects 64 bits
+
 RUN_DEPENDS=	gnuplot:math/gnuplot
 
 USES=		cargo
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	bgkillas
 
 CARGO_CRATES=	autocfg-1.1.0 \
 		az-1.2.1 \
 		bitflags-1.3.2 \
 		byteorder-1.4.3 \
 		cfg-if-1.0.0 \
 		crossterm-0.26.1 \
 		crossterm_winapi-0.9.1 \
 		gmp-mpfr-sys-1.6.0 \
 		gnuplot-0.0.39 \
 		libc-0.2.147 \
 		lock_api-0.4.10 \
 		log-0.4.19 \
 		mio-0.8.8 \
 		parking_lot-0.12.1 \
 		parking_lot_core-0.9.8 \
 		redox_syscall-0.3.5 \
 		rug-1.20.1 \
 		scopeguard-1.2.0 \
 		signal-hook-0.3.17 \
 		signal-hook-mio-0.2.3 \
 		signal-hook-registry-1.4.1 \
 		smallvec-1.11.0 \
 		term_size-0.3.2 \
 		wasi-0.11.0+wasi-snapshot-preview1 \
 		winapi-0.3.9 \
 		winapi-i686-pc-windows-gnu-0.4.0 \
 		winapi-x86_64-pc-windows-gnu-0.4.0 \
 		windows-sys-0.42.0 \
 		windows-sys-0.48.0 \
 		windows-targets-0.48.1 \
 		windows_aarch64_gnullvm-0.42.2 \
 		windows_aarch64_gnullvm-0.48.0 \
 		windows_aarch64_msvc-0.42.2 \
 		windows_aarch64_msvc-0.48.0 \
 		windows_i686_gnu-0.42.2 \
 		windows_i686_gnu-0.48.0 \
 		windows_i686_msvc-0.42.2 \
 		windows_i686_msvc-0.48.0 \
 		windows_x86_64_gnu-0.42.2 \
 		windows_x86_64_gnu-0.48.0 \
 		windows_x86_64_gnullvm-0.42.2 \
 		windows_x86_64_gnullvm-0.48.0 \
 		windows_x86_64_msvc-0.42.2 \
 		windows_x86_64_msvc-0.48.0
 
 PLIST_FILES=	bin/${PORTNAME}
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
 
 .include <bsd.port.mk>