diff --git a/freebsd-sources-9.1-r1.ebuild b/freebsd-sources-9.1-r1.ebuild
index 2f254d8..0d2c081 100644
--- a/freebsd-sources-9.1-r1.ebuild
+++ b/freebsd-sources-9.1-r1.ebuild
@@ -28,6 +28,7 @@ PATCHES=( "${FILESDIR}/${PN}-9.0-disable-optimization.patch"
 	"${FILESDIR}/${PN}-7.1-includes.patch"
 	"${FILESDIR}/${PN}-9.0-sysctluint.patch"
 	"${FILESDIR}/${PN}-7.0-tmpfs_whiteout_stub.patch"
+	"${FILESDIR}/${PN}-9.1-cdefs.h-gcc47.patch"
 	"${FILESDIR}/${PN}-9.1-cve-2013-3266.patch" )
 
 src_unpack() {