diff --git a/astro/astrometry/Makefile b/astro/astrometry/Makefile
index db003a1d20a8..56edb9d13c15 100644
--- a/astro/astrometry/Makefile
+++ b/astro/astrometry/Makefile
@@ -11,7 +11,7 @@ DISTNAME=	${PORTNAME}.net-${PORTVERSION}
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Describes an astronomical image
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy
+BUILD_DEPENDS=	${PYNUMPY}
 LIB_DEPENDS=	libcairo.so:${PORTSDIR}/graphics/cairo \
 		libcfitsio.so:${PORTSDIR}/astro/cfitsio \
 		libjpeg.so:${PORTSDIR}/graphics/jpeg \
diff --git a/graphics/mypaint/Makefile b/graphics/mypaint/Makefile
index 4f0b9a78ed0d..2268e922cea9 100644
--- a/graphics/mypaint/Makefile
+++ b/graphics/mypaint/Makefile
@@ -11,8 +11,8 @@ MASTER_SITES=	http://download.gna.org/mypaint/ \
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Fast painting/scribbling program
 
-RUN_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
-		${PYTHON_SITELIBDIR}/cairo:${PORTSDIR}/graphics/py-cairo \
+RUN_DEPENDS=	${PYNUMPY} \
+		${PYTHON_PKGNAMEPREFIX}cairo>0:${PORTSDIR}/graphics/py-cairo \
 		${PYTHON_PKGNAMEPREFIX}protobuf>0:${PORTSDIR}/devel/py-protobuf
 LIB_DEPENDS=	libjson-c.so:${PORTSDIR}/devel/json-c \
 		liblcms2.so:${PORTSDIR}/graphics/lcms2
diff --git a/math/rpy/Makefile b/math/rpy/Makefile
index d8e44fd1c8a0..7dff9087d150 100644
--- a/math/rpy/Makefile
+++ b/math/rpy/Makefile
@@ -13,9 +13,9 @@ COMMENT=	Python interface to the R Programming Language
 LICENSE=	GPLv2 LGPL21 MPL
 LICENSE_COMB=	dual
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+BUILD_DEPENDS=	${PYNUMPY} \
 		R:${PORTSDIR}/math/R
-RUN_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+RUN_DEPENDS=	${PYNUMPY} \
 		R:${PORTSDIR}/math/R
 
 USES=		python
diff --git a/math/rpy2/Makefile b/math/rpy2/Makefile
index e61002153f1a..fc729b8a0954 100644
--- a/math/rpy2/Makefile
+++ b/math/rpy2/Makefile
@@ -12,9 +12,9 @@ COMMENT=	Python interface to the R Programming Language
 
 LICENSE=	GPLv2
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+BUILD_DEPENDS=	${PYNUMPY} \
 		R:${PORTSDIR}/math/R
-RUN_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+RUN_DEPENDS=	${PYNUMPY} \
 		R:${PORTSDIR}/math/R
 
 USES=		python readline
diff --git a/science/py-hcluster/Makefile b/science/py-hcluster/Makefile
index 5ac1166b4a3b..31920625ce38 100644
--- a/science/py-hcluster/Makefile
+++ b/science/py-hcluster/Makefile
@@ -11,7 +11,7 @@ PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 MAINTAINER=	wenheping@gmail.com
 COMMENT=	Hierarchical Clustering Package For Scipy
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+BUILD_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}matplotlib>0:${PORTSDIR}/math/py-matplotlib
 RUN_DEPENDS:=	${BUILD_DEPENDS}
 
diff --git a/science/py-mlpy/Makefile b/science/py-mlpy/Makefile
index ed3c65a48656..3743998c6181 100644
--- a/science/py-mlpy/Makefile
+++ b/science/py-mlpy/Makefile
@@ -13,7 +13,7 @@ COMMENT=	High performance Python package for predictive modeling
 
 LICENSE=	GPLv3
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy \
+BUILD_DEPENDS=	${PYNUMPY} \
 		cython>0:${PORTSDIR}/lang/cython
 RUN_DEPENDS:=	${BUILD_DEPENDS}
 LIB_DEPENDS=	libgsl.so:${PORTSDIR}/math/gsl
diff --git a/science/pycdf/Makefile b/science/pycdf/Makefile
index 9bba30cfd41b..3b45a95f8eb9 100644
--- a/science/pycdf/Makefile
+++ b/science/pycdf/Makefile
@@ -11,7 +11,7 @@ DISTNAME=	${PORTNAME}-0.6-3b
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Python Interface to the Unidata NetCDF Library
 
-BUILD_DEPENDS=	${PYTHON_SITELIBDIR}/numpy:${PORTSDIR}/math/py-numpy
+BUILD_DEPENDS=	${PYNUMPY}
 LIB_DEPENDS=	libnetcdf.so:${PORTSDIR}/science/netcdf
 RUN_DEPENDS:=	${BUILD_DEPENDS}