diff --git a/net-mgmt/nocol/Makefile b/net-mgmt/nocol/Makefile
index 8b439e62be74..4562d92f4544 100644
--- a/net-mgmt/nocol/Makefile
+++ b/net-mgmt/nocol/Makefile
@@ -30,4 +30,10 @@ NO_PACKAGE=	Hostname is needed.
 post-install:
 		@cd ${WRKSRC} && make root
 
+.include <bsd.port.pre.mk>
+
+.if ${OSVERSION} >= 601104
+BROKEN=		Does not compile on FreeBSD >= 6.x
+.endif
+
 .include <bsd.port.mk>
diff --git a/net/nvnet/Makefile b/net/nvnet/Makefile
index 9e2f55c81a9d..e75995d5a452 100644
--- a/net/nvnet/Makefile
+++ b/net/nvnet/Makefile
@@ -30,6 +30,10 @@ MAKE_ENV=	OSTYPE=${OPSYS}
 IGNORE=		Systems prior to FreeBSD 4.9 & 5.1 are not supported
 .endif
 
+.if ${OSVERSION} >= 601104
+BROKEN=		Does not compile on FreeBSD >= 6.x
+.endif
+
 pre-fetch:
 .if !exists(${SRC_BASE}/sys/Makefile)
 IGNORE=		Kernel source files required