diff --git a/xvid-1.3.2-r1.ebuild b/xvid-1.3.2-r1.ebuild
index f2fd7af..4c7e27d 100644
--- a/xvid-1.3.2-r1.ebuild
+++ b/xvid-1.3.2-r1.ebuild
@@ -14,15 +14,16 @@ SRC_URI="http://downloads.xvid.org/downloads/${MY_P}.tar.bz2"
 
 LICENSE="GPL-2"
 SLOT="0"
-KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~x86-fbsd"
-IUSE="examples +threads pic"
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~x86-fbsd"
+IUSE="examples elibc_FreeBSD +threads pic"
 
 NASM=">=dev-lang/nasm-2"
 YASM=">=dev-lang/yasm-1"
 
 DEPEND="amd64? ( || ( ${YASM} ${NASM} ) )
+	amd64-fbsd? ( ${NASM} )
 	x86? ( || ( ${YASM} ${NASM} ) )
-	x86-fbsd? ( || ( ${YASM} ${NASM} ) )"
+	x86-fbsd? ( ${NASM} )"
 RDEPEND="abi_x86_32? ( !app-emulation/emul-linux-x86-medialibs[-abi_x86_32(-)] )"
 
 S=${WORKDIR}/${MY_PN}/build/generic
@@ -43,6 +44,7 @@ src_prepare() {
 
 multilib_src_configure() {
 	use sparc && append-cflags -mno-vis #357149
+	use elibc_FreeBSD && export ac_cv_prog_ac_yasm=no #477736
 
 	local myconf
 	if use pic || [[ ${ABI} == "x32" ]] ; then #421841