diff --git a/science/ttk/Makefile b/science/ttk/Makefile
index b9c14da91a8e..288df0f6626f 100644
--- a/science/ttk/Makefile
+++ b/science/ttk/Makefile
@@ -1,41 +1,45 @@
 PORTNAME=	ttk
 DISTVERSION=	1.1.0
+PORTREVISION=	1
 CATEGORIES=	science
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Topology ToolKit: Topological data analysis and visualization
 WWW=		https://topology-tool-kit.github.io/
 
 LICENSE=	BSD4CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BROKEN_i386=	compilation fails: cannot initialize a parameter of type 'const ttk::LongSimplexId *' (aka 'const long long *') with an lvalue ..., see https://github.com/topology-tool-kit/ttk/issues/852
 
 PY_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}scikit-build>0:devel/py-scikit-build@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}scipy>0:science/py-scipy@${PY_FLAVOR}
 BUILD_DEPENDS=	${LOCALBASE}/include/boost/functional/hash.hpp:devel/boost-libs \
 		cli11>0:devel/cli11 \
 		exprtk>0:math/exprtk \
 		spectra>0:math/spectra \
 		utf8cpp>0:devel/utf8cpp \
 		websocketpp>0:devel/websocketpp \
 		${PY_DEPENDS}
 BUILD_DEPENDS+=	nlohmann-json>0:devel/nlohmann-json # is required by lib/cmake/paraview-5.11/vtk/VTK-vtk-module-find-packages.cmake:1167
 LIB_DEPENDS=	libcgraph.so:graphics/graphviz \
 		libembree3.so:graphics/embree \
 		libfreetype.so:print/freetype2 \
 		libjsoncpp.so:devel/jsoncpp \
 		libvtkRenderingCore-pv${PARAVIEW_VER}.so:science/paraview \
 		libzfp.so:devel/zfp
 RUN_DEPENDS=	${PY_DEPENDS}
 
 USES=		cmake eigen:3 compiler:c++11-lang gl python sqlite xorg
 USE_GL=		glew
 USE_XORG=	x11
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	topology-tool-kit
 
+post-stage:
+	${RM} ${STAGEDIR}${PREFIX}/include/Python.h
+
 .include <../../science/paraview/Makefile.version>
 .include <bsd.port.mk>