diff --git a/databases/py-tiledb/Makefile b/databases/py-tiledb/Makefile
index c0c19041cb27..7a87f40b16e7 100644
--- a/databases/py-tiledb/Makefile
+++ b/databases/py-tiledb/Makefile
@@ -1,25 +1,28 @@
 # Created by: Po-Chuan Hsieh <sunpoet@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	tiledb
 PORTVERSION=	0.4.1
 CATEGORIES=	databases python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Python interface to the TileDB array storage manager
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+NOT_FOR_ARCHS=	i386
+NOT_FOR_ARCHS_REASON=	is currently 64-bit only
+
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}setuptools_scm>=1.5.4:devel/py-setuptools_scm@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}wheel>=0.30:devel/py-wheel@${PY_FLAVOR} \
 		${RUN_DEPENDS}
 LIB_DEPENDS=	libtiledb.so:databases/tiledb
 RUN_DEPENDS=	${PYNUMPY}
 
 USES=		compiler:c++11-lang localbase python
 USE_PYTHON=	autoplist concurrent cython distutils
 
 .include <bsd.port.mk>