diff --git a/science/elmerfem/Makefile b/science/elmerfem/Makefile
index 2b860d3b8477..32806a7ae7d4 100644
--- a/science/elmerfem/Makefile
+++ b/science/elmerfem/Makefile
@@ -1,118 +1,130 @@
 PORTNAME=	elmerfem
 DISTVERSIONPREFIX=	release-
 DISTVERSION=	26.1
+PORTREVISION=	1
 CATEGORIES=	science
 
 MAINTAINER=	thierry@FreeBSD.org
 COMMENT=	Multiphysical simulation software
 WWW=		https://www.elmerfem.org/blog/
 
 LICENSE=	GPLv2
 
 LIB_DEPENDS=	libhdf5.so:science/hdf5 \
 		libmetis.so:math/metis \
 		libnetcdf.so:science/netcdf \
 		libparpack.so:math/arpack-ng \
 		libcholmod.so:math/suitesparse-cholmod \
 	        libumfpack.so:math/suitesparse-umfpack
 
 USES=		blaslapack:openblas cmake compiler:c++11-lang fortran localbase mpi
 USE_CXXSTD=	c++14
 USE_GITHUB=	yes
 GH_ACCOUNT=	ElmerCSC
 USE_LDCONFIG=	${PREFIX}/lib/elmersolver
 
 CMAKE_ARGS=	-DELMER_FEM_REVISION:STRING=${GH_TAGNAME}
 
 ALL_TARGET=	# empty
 
 CMAKE_ARGS+=	-DHAVE_INTTYPES_H:BOOL=ON	\
 		-DEXTERNAL_ARPACK:BOOL=ON	\
 		-DEXTERNAL_PARPACK:BOOL=ON	\
 		-DEXTERNAL_UMFPACK:BOOL=ON
 .if !defined(MAINTAINER_MODE)
 CMAKE_ARGS+=	-Wno-dev
 .endif
 
 OPTIONS_DEFINE=		DOCS GUI OCC
 OPTIONS_DEFAULT=	GUI OCC
 OPTIONS_SUB=		yes
 
 GUI_DESC=		Build with ElmerGUI (Graphical User Interface)
 OCC_DESC=		Use OpenCASCADE for CAD import in ElmerGUI
 
 DOCS_USES=		tex
 DOCS_USE=		tex=pdftex:build
 
 GUI_LIB_DEPENDS=	libqwt.so:x11-toolkits/qwt6@qt5
 GUI_USES=		gl jpeg qt:5 xorg
 GUI_USE=		gl=gl,glu xorg=ice,sm,x11,xext,xt qt=${_QT5_LIBS:ts,}
 GUI_CMAKE_BOOL=		WITH_ELMERGUI WITH_PARAVIEW
 GUI_CMAKE_ON=		-DQWT_LIBRARY=${QT_LIBDIR}/libqwt.so \
 			-DQWT_INCLUDE_DIR=${QT_INCDIR}/qwt6 \
 			-DDESIRED_QT_VERSION=5 \
 			-DWITH_QT5:BOOL=TRUE \
 			-DQT_FOUND:BOOL=TRUE
 
 OCC_IMPLIES=		GUI
 OCC_LIB_DEPENDS=	libexpat.so:textproc/expat2 \
 			libfreetype.so:print/freetype2 \
 			libpng.so:graphics/png \
 			libpython${_PYVERSION}.so:lang/python${PYTHON_SUFFIX} \
 			libboost_thread.so:devel/boost-libs \
 			libtiff.so:graphics/tiff \
 			libTKernel.so:cad/opencascade \
 			libvtksys-${VTK_VER}.so:math/vtk${VTK_VER:R}
 OCC_USES=		python
 OCC_CMAKE_BOOL=		WITH_OCC
 OCC_CMAKE_ON=		-DVTK_DIR=${LOCALBASE}/lib/cmake/vtk-9.0 \
 			-DPython3_EXECUTABLE=${PYTHON_CMD}
 
 _LIBSTAGEDIR=	${STAGEDIR}/${PREFIX}/lib/elmersolver
 _PYVERSION=	${PYTHON_VER}${PYTHON_ABIVER}
 _QT5_LIBS=	buildtools:build core declarative gui network opengl \
 		printsupport qmake:build script sql svg widgets xml
 
 .include <../../math/vtk9/Makefile.version>
 .include <bsd.port.pre.mk>
 
 .if ${ARCH} == "amd64"
 CFLAGS_${ARCH}=	-fPIC
 CXXFLAGS_${ARCH}= -fPIC
 FCFLAGS+=	-fPIC
 FFLAGS+=	-fPIC
 .endif
 
+PDFS=	elmerice/Solvers/Documentation/m1qn3.pdf	\
+	elmerice/Solvers/Documentation/poroussolver.pdf	\
+	elmerice/Solvers/Documentation/siasolver.pdf	\
+	elmerice/UserFunctions/Documentation/usf_damage.pdf	\
+	fem/src/modules/contrib/ShellMultiSolver/ShellMutiSolverUserGuide.pdf
+PORTDOCS=	*
+
 .if ${GCC_DEFAULT} >= 10
 # workaround for Type mismatch between actual argument at (1) and actual argument at (2) (REAL(8)/COMPLEX(8)).
 # in theory, this should set FCFLAGS, but the port does not conform
 FFLAGS+=	-fallow-argument-mismatch
 .endif
 
 pre-configure:
 	${RM} ${WRKSRC}/cmake/Modules/CMakeParseArguments.cmake
 	${RM} -r ${WRKSRC}/elmergrid/src/metis-5.1.0
 	${REINPLACE_CMD} -e 's,"metis.*/metis\.h",<metis.h>,' \
 		${WRKSRC}/elmergrid/src/egparallel.c
 
 pre-configure-DOCS-off:
 	${REINPLACE_CMD} -e '/doc/s|ADD_SUB|#ADD_SUB|' ${WRKSRC}/fhutiter/CMakeLists.txt
 
 pre-configure-OCC-on:
 	${REINPLACE_CMD} -e "s|\$${VERSION}|`${PKG_QUERY} '%v' opencascade`|" \
 		"${WRKSRC}/cmake/Modules/FindOCE.cmake"
 	${REINPLACE_CMD} -e 's|$${INCLUDE}|${LOCALBASE}/include/OpenCASCADE|' \
 		"${WRKSRC}/cmake/Modules/FindOCE.cmake"
 
 post-install:
 	${LN} -sf ElmerSolver_mpi ${STAGEDIR}${PREFIX}/bin/ElmerSolver
 	${LN} -sf libelmersolver.so ${_LIBSTAGEDIR}/libelmersolver.so.0
 	${LN} -sf libfhuti.so ${_LIBSTAGEDIR}/libfhuti.so.0
 	${LN} -sf libmatc.so ${_LIBSTAGEDIR}/libmatc.so.0
 	${LN} -sf libmpi_stubs.so ${_LIBSTAGEDIR}/libmpi_stubs.so.0
 	@${STRIP_CMD} ${STAGEDIR}/${PREFIX}/bin/ElmerGrid
 
+post-install-DOCS-on:
+	@${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} ${PDFS:C|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
+
 do-test:
 	@cd ${TEST_WRKSRC} && ctest -C ${CMAKE_BUILD_TYPE} ${_MAKE_JOBS}
 
 .include <bsd.port.post.mk>