diff --git a/cad/pdnmesh/Makefile b/cad/pdnmesh/Makefile
index b06330d448ee..c588dd5bf87f 100644
--- a/cad/pdnmesh/Makefile
+++ b/cad/pdnmesh/Makefile
@@ -17,7 +17,7 @@ LIB_DEPENDS=	libgtkglext-x11-1.0.so:x11-toolkits/gtkglext
 OPTIONS_DEFINE=	ATLAS DOCS EXAMPLES
 ATLAS_DESC=	Enable ATLAS support
 
-USES=		fortran pkgconfig
+USES=		compiler:c++11-lang fortran gl gnome pkgconfig
 USE_GL=		glu
 USE_GNOME=	gtk20
 GNU_CONFIGURE=	yes