diff --git a/dev-libs/libconfig/libconfig-1.5.ebuild b/dev-libs/libconfig/libconfig-1.5.ebuild
index 1f9cc4f295f08..ba09057dd62a3 100644
--- a/dev-libs/libconfig/libconfig-1.5.ebuild
+++ b/dev-libs/libconfig/libconfig-1.5.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=5
@@ -12,7 +12,7 @@ SRC_URI="http://www.hyperrealm.com/${PN}/${P}.tar.gz"
 
 LICENSE="LGPL-2.1"
 SLOT="0"
-KEYWORDS="amd64 ~arm ~arm64 ~ia64 ~mips ppc ~ppc64 sparc x86 ~x86-linux"
+KEYWORDS="amd64 ~arm ~arm64 ~ia64 ~mips ppc ~ppc64 s390 sparc x86 ~x86-linux"
 IUSE="+cxx examples static-libs"
 
 DEPEND="