diff --git a/devel/py-bullet3/Makefile b/devel/py-bullet3/Makefile
index f5242b951373..167c9b74d5ad 100644
--- a/devel/py-bullet3/Makefile
+++ b/devel/py-bullet3/Makefile
@@ -1,28 +1,30 @@
 PORTNAME=	bullet3
 DISTVERSION=	3.21
 CATEGORIES=	devel
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Python version of 3D collision detection library Bullet
 
 LICENSE=	ZLIB
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}gym>0:math/py-gym@${PY_FLAVOR}
 
 USES=		compiler:c++11-lang gl localbase python:3.6+
 USE_PYTHON=	distutils autoplist
 USE_GL=		gl glew
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	bulletphysics
 
+CFLAGS_powerpc64=	-mvsx
+
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHON_SITELIBDIR}/pybullet*.so
 
 do-test: install # test require graphical environment
 	@${PYTHON_CMD} ${FILESDIR}/test.py
 
 .include <bsd.port.mk>