diff --git a/dev-python/whoosh/whoosh-2.7.4.ebuild b/dev-python/whoosh/whoosh-2.7.4.ebuild
index bebab4dc689ab..5e2191b8142a5 100644
--- a/dev-python/whoosh/whoosh-2.7.4.ebuild
+++ b/dev-python/whoosh/whoosh-2.7.4.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -13,7 +13,7 @@ SRC_URI="mirror://pypi/W/${PN^}/${P^}.tar.gz"
 
 LICENSE="BSD-2"
 SLOT="0"
-KEYWORDS="alpha amd64 arm arm64 hppa ia64 ~mips ppc ppc64 sparc x86 ~amd64-fbsd ~x64-solaris"
+KEYWORDS="alpha amd64 arm arm64 hppa ia64 ~mips ppc ppc64 s390 sparc x86 ~amd64-fbsd ~x64-solaris"
 IUSE="doc test"
 
 DEPEND="