diff --git a/graphics/seexpr/Makefile b/graphics/seexpr/Makefile
index bba03ab09b34..5d4ccc5d06f5 100644
--- a/graphics/seexpr/Makefile
+++ b/graphics/seexpr/Makefile
@@ -1,62 +1,64 @@
 # Created by: Alexey Dokuchaev <danfe@FreeBSD.org>
 
 PORTNAME=	seexpr
 PORTVERSION=	3.4.4.0
 PORTREVISION=	1
 CATEGORIES=	graphics math
 MASTER_SITES=	https://download.kde.org/stable/${PORTNAME}/
 
 MAINTAINER=	danfe@FreeBSD.org
 COMMENT=	Embeddable expression evaluation language
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libpng.so:graphics/png
 
 USES=		bison cmake compiler:c++14-lang gl qt:5
 USE_GL=		gl glu
 USE_LDCONFIG=	yes
 USE_QT=		buildtools_build qmake_build core gui opengl widgets
 
 MAKE_JOBS_UNSAFE=	yes	# https://github.com/wdas/seexpr/issues/40
 
+CONFLICTS_INSTALL=	kseexpr
+
 OPTIONS_DEFINE=	ANIMCURVE DEEPWATER LLVM NLS PYTHON
 OPTIONS_DEFAULT=	DEEPWATER
 OPTIONS_SUB=	yes
 
 ANIMCURVE_DESC=	Build controls for animation curves
 ANIMCURVE_CMAKE_ON=	-DENABLE_ANIMCURVE:BOOL=TRUE
 ANIMCURVE_BROKEN=	error: use of undeclared identifier 'animlib'
 
 DEEPWATER_DESC=	Build controls for deep water spectrum
 DEEPWATER_CMAKE_ON=	-DENABLE_DEEPWATER:BOOL=TRUE
 
 LLVM_DESC=		Build with LLVM ${LLVM_DEFAULT:C/.$$//} backend
 LLVM_LIB_DEPENDS=	libLLVM.so:devel/llvm${LLVM_DEFAULT}
 LLVM_CMAKE_OFF=		-DENABLE_LLVM_BACKEND:BOOL=FALSE
 
 NLS_USES=		kde:5
 NLS_USE=		KDE=ecm_build
 NLS_CMAKE_OFF=		-DBUILD_TRANSLATIONS:BOOL=FALSE
 
 PYTHON_BUILD_DEPENDS=	sip:devel/py-sip4
 PYTHON_LIB_DEPENDS=	${PY_BOOST}
 PYTHON_USES=		pyqt:5 python
 PYTHON_USE=		PYQT=pyqt5
 PYTHON_CMAKE_ON=	-DPYQT_SIP_DIR:STRING=${PYQT_SIPDIR}
 PYTHON_CMAKE_OFF=	-DUSE_PYTHON:BOOL=FALSE
 
 .if ! ${MACHINE_CPU:Msse41}
 CMAKE_ARGS+=	-DENABLE_SSE4:BOOL=FALSE
 .endif
 
 post-patch:
 	@${REINPLACE_CMD} -e '/<alloca\.h>/d' ${WRKSRC}/src/SeExpr2/Platform.h
 	@${REINPLACE_CMD} -e '/pkgconfig/s/share/libdata/' \
 		${WRKSRC}/CMakeLists.txt
 
 post-install:
 	@${RMDIR} ${STAGEDIR}${PREFIX}/include/SeExpr2/generated
 
 .include <bsd.port.mk>