diff --git a/multimedia/kdenlive/Makefile b/multimedia/kdenlive/Makefile
index f8844d68ea92..4b2deb1beef0 100644
--- a/multimedia/kdenlive/Makefile
+++ b/multimedia/kdenlive/Makefile
@@ -1,70 +1,70 @@
 PORTNAME=	kdenlive
 DISTVERSION=	${KDE_APPLICATIONS_VERSION}
 CATEGORIES=	multimedia kde kde-applications
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	KDE professional quality non-linear video editing suite
 
 LICENSE=	GPLv2
 
 LIB_DEPENDS=	librttr_core.so:devel/rttr
 BUILD_DEPENDS=	${LOCALBASE}/include/linux/input.h:devel/evdev-proto \
 		${LOCALBASE}/include/linux/videodev2.h:multimedia/v4l_compat
 RUN_DEPENDS=	ffmpeg${FFMPEG_SUFX}:multimedia/ffmpeg${FFMPEG_SUFX} \
 		${LOCALBASE}/lib/mlt-7/libmltqt.so:multimedia/mlt7-qt5
 
 USES=		cmake compiler:c++11-lang desktop-file-utils gettext-tools \
 		gl mlt:7 pkgconfig qt:5 shared-mime-info kde:5 tar:xz xorg
 USE_GL=		gl glu
 USE_KDE=	archive attica auth bookmarks codecs completion config \
 		configwidgets coreaddons crash dbusaddons filemetadata \
 		guiaddons i18n iconthemes kio itemviews jobwidgets \
 		kdeclarative newstuff notifications notifyconfig package \
 		service solid sonnet textwidgets widgetsaddons windowsystem \
 		xmlgui \
 		ecm_build \
 		init_run
 USE_QT=		concurrent core dbus declarative gui multimedia network \
 		networkauth quickcontrols2 xml \
 		buildtools_build qmake_build \
 		quickcontrols_run script svg webkit widgets
 USE_XORG=	x11
-CFLAGS+=	-I${LOCALBASE}/include # linux/input.h
+CFLAGS+=	-isystem${LOCALBASE}/include # linux/input.h
 CMAKE_ARGS=	-DFFMPEG_SUFFIX:STRING="${FFMPEG_SUFX}"
 
 # Keep in sync with multimedia/mlt, possibly.
 FFMPEG_SUFX=	# Currently empty.
 
 OPTIONS_DEFINE=	DVDWIZARD FILESHARE FREI0R LADSPA SCREENCAST V4L XINE DOCS
 OPTIONS_DEFAULT=DVDWIZARD FILESHARE FREI0R LADSPA SCREENCAST V4L XINE
 OPTIONS_SUB=	yes
 
 DVDWIZARD_DESC=	DVD authoring via DVDAuthor and cdrtools
 FILESHARE_DESC=	Common KF5 filesharing support
 SCREENCAST_DESC=Screen capture support via recordMyDesktop
 V4L_DESC=	Webcam support via Video4Linux
 XINE_DESC=	DVD preview support via xine
 
 DVDWIZARD_RUN_DEPENDS=	dvdauthor:multimedia/dvdauthor \
 			cdrecord:sysutils/cdrtools
 
 FILESHARE_USE=	KDE=purpose
 FILESHARE_CMAKE_BOOL_OFF=	CMAKE_DISABLE_FIND_PACKAGE_KF5Purpose
 
 FREI0R_RUN_DEPENDS=	frei0r-plugins>=0:graphics/frei0r-plugins
 
 LADSPA_RUN_DEPENDS=	swhplugins>=0:audio/swhplugins
 
 SCREENCAST_RUN_DEPENDS=	recordmydesktop:multimedia/recordmydesktop
 
 V4L_LIB_DEPENDS=	libv4l2.so:multimedia/libv4l
 V4L_CMAKE_OFF=		-DWITH_LibV4L2:BOOL=FALSE
 
 XINE_RUN_DEPENDS=	xine:multimedia/xine
 
 post-patch:
 	@${REINPLACE_CMD} -e '/^update_xdg_mimetypes/ d' \
 		-e '/SharedMimeInfo/ d' \
 		${PATCH_WRKSRC}/data/CMakeLists.txt
 
 .include <bsd.port.mk>