diff --git a/dev-ml/duration/duration-0.1.3.ebuild b/dev-ml/duration/duration-0.1.3.ebuild
index 88cf87facc3f7..24509398680e3 100644
--- a/dev-ml/duration/duration-0.1.3.ebuild
+++ b/dev-ml/duration/duration-0.1.3.ebuild
@@ -11,7 +11,7 @@ SRC_URI="https://github.com/hannesm/duration/archive/${PV}.tar.gz -> ${P}.tar.gz
 
 LICENSE="ISC"
 SLOT="0/${PV}"
-KEYWORDS="~amd64 ~arm ~ppc64 ~x86"
+KEYWORDS="~amd64 ~arm ~ppc ~ppc64 ~x86"
 IUSE="+ocamlopt test"
 RESTRICT="!test? ( test )"