Index: graphics/piglit/Makefile
===================================================================
--- graphics/piglit/Makefile
+++ graphics/piglit/Makefile
@@ -29,7 +29,7 @@
 GH_PROJECT=	piglit
 GH_TAGNAME=	ca5350b4056ae63a93c4c207087b7634873b2ce2
 
-USES=		cmake:outsource pkgconfig python:2
+USES=		cmake:outsource compiler:c11 pkgconfig python:2
 USE_GL=		egl gbm gl glu
 USE_XORG=	x11 xcb xext xrender