Index: Makefile
===================================================================
--- Makefile	(revision 480606)
+++ Makefile	(working copy)
@@ -10,7 +10,7 @@
 
 LIB_DEPENDS=	libdbus-1.so:devel/dbus
 
-USES=		qmake:no_env qt-dist:5,base
+USES=		compiler:c++17-lang qmake:no_env qt-dist:5,base
 USE_QT=		core qmake_build buildtools_build
 HAS_CONFIGURE=	yes
 CONFIGURE_ARGS=	-no-gui -no-xcb