diff --git a/devel/py-memory-allocator/Makefile b/devel/py-memory-allocator/Makefile
index 9c44a2f75c9c..2367e111a314 100644
--- a/devel/py-memory-allocator/Makefile
+++ b/devel/py-memory-allocator/Makefile
@@ -1,16 +1,17 @@
 PORTNAME=	memory_allocator
 PORTVERSION=	0.2.0
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	thierry@FreeBSD.org
 COMMENT=	Allocate memory easily with cython
-WWW=		https://pypi.org/project/memory-allocator/
+WWW=		https://github.com/sagemath/memory_allocator
 
 LICENSE=	GPLv3
 
-USES=		meson python
+USES=		meson pkgconfig python
 USE_PYTHON=	cython
+BINARY_ALIAS=	cython=cython-${PYTHON_VER}
 
 .include <bsd.port.mk>