Index: head/graphics/seexpr/Makefile
===================================================================
--- head/graphics/seexpr/Makefile	(revision 470870)
+++ head/graphics/seexpr/Makefile	(revision 470871)
@@ -1,35 +1,36 @@
 # Created by: Alexey Dokuchaev <danfe@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	seexpr
 DISTVERSIONPREFIX=	v
 PORTVERSION=	2.11
 PORTREVISION=	2
 CATEGORIES=	graphics math
 
 MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Embeddable expression evaluation language
 
 LICENSE=	APACHE20
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	wdas
 GH_PROJECT=	SeExpr
 
-USES=		bison cmake compiler:c++0x pyqt:4 python
+USES=		bison cmake compiler:c++0x pyqt:4 python:2.7
 USE_PYQT=	gui_build sip_build
 USE_QT4=	moc_build qmake_build rcc_build uic_build gui opengl
+BINARY_ALIAS=	sip=sip-${PYTHON_VER}
 
 MAKE_JOBS_UNSAFE=	yes	# https://github.com/wdas/seexpr/issues/40
 
 CXXFLAGS+=	-I${LOCALBASE}/include
 
 .if ${MACHINE_CPU:Msse41}
 CMAKE_ARGS+=	-DUSE_SSE41:BOOL=ON
 .endif
 
 post-patch:
 	@${REINPLACE_CMD} -e '/<alloca\.h>/d' ${WRKSRC}/src/SeExpr/SePlatform.h
 	@${REINPLACE_CMD} -e 's, "dl",,' ${WRKSRC}/src/SeExpr/CMakeLists.txt
 
 .include <bsd.port.mk>