diff --git a/profiles/arch/arm64/package.use.stable.mask b/profiles/arch/arm64/package.use.stable.mask
index 4bcd00aedd27d..6739de72ab56c 100644
--- a/profiles/arch/arm64/package.use.stable.mask
+++ b/profiles/arch/arm64/package.use.stable.mask
@@ -1,6 +1,11 @@
 # Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
+# Mart Raudsepp <leio@gentoo.org> (24 Jul 2018)
+# Temporary mask due to test failures in sys-libs/libcxxabi
+# and sys-libs/compiler-rt-sanitizers
+sys-devel/clang-runtime libcxx sanitize
+
 # Mart Raudsepp <leio@gentoo.org> (28 Jun 2018)
 # net-misc/lksctp-tools not stable yet
 dev-libs/openssl sctp
diff --git a/sys-devel/clang-runtime/clang-runtime-6.0.1.ebuild b/sys-devel/clang-runtime/clang-runtime-6.0.1.ebuild
index 2aec5c92acb2e..8dac1211a8397 100644
--- a/sys-devel/clang-runtime/clang-runtime-6.0.1.ebuild
+++ b/sys-devel/clang-runtime/clang-runtime-6.0.1.ebuild
@@ -11,7 +11,7 @@ SRC_URI=""
 
 LICENSE="metapackage"
 SLOT="${PV%_*}"
-KEYWORDS="amd64 ~arm64 ~ppc64 x86 ~amd64-fbsd ~amd64-linux ~ppc-macos ~x64-macos ~x86-macos"
+KEYWORDS="amd64 arm64 ~ppc64 x86 ~amd64-fbsd ~amd64-linux ~ppc-macos ~x64-macos ~x86-macos"
 IUSE="+compiler-rt crt libcxx openmp +sanitize"
 
 RDEPEND="