Index: Makefile
===================================================================
--- Makefile	(revision 490521)
+++ Makefile	(working copy)
@@ -16,7 +16,7 @@
 RUN_DEPENDS=	lsz:comms/lrzsz
 
 USE_QT=		qt3support qmake_build moc_build rcc_build uic_build
-USES=		cmake qt:5
+USES=		cmake compiler:c++11-lang qt:5
 USE_QT=		buildtools_build core gui qmake_build serialport widgets
 USE_GITHUB=	yes
 GH_ACCOUNT=	neundorf