diff --git a/graphics/drm-fbsd11.2-kmod/Makefile b/graphics/drm-fbsd11.2-kmod/Makefile
index c3b39acac3d8..05c7824bd4fa 100644
--- a/graphics/drm-fbsd11.2-kmod/Makefile
+++ b/graphics/drm-fbsd11.2-kmod/Makefile
@@ -32,6 +32,10 @@ GH_TAGNAME=	72300db
 
 .include <bsd.port.options.mk>
 
+.if ${OPSYS} == FreeBSD && (${OSVERSION} < 1102000 || ${OSVERSION} > 1200000)
+IGNORE=		only supported on FreeBSD 11.
+.endif
+
 .if ${OPSYS} != FreeBSD
 IGNORE=		not supported on anything but FreeBSD (missing linuxkpi functionality)
 .endif