diff --git a/dev-ruby/mutex_m/mutex_m-0.2.0.ebuild b/dev-ruby/mutex_m/mutex_m-0.2.0.ebuild
index c7fdcdf5110de..543e417415fc1 100644
--- a/dev-ruby/mutex_m/mutex_m-0.2.0.ebuild
+++ b/dev-ruby/mutex_m/mutex_m-0.2.0.ebuild
@@ -16,7 +16,7 @@ SRC_URI="https://github.com/ruby/mutex_m/archive/v${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="BSD-2"
 SLOT="$(ver_cut 1-2)"
-KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~mips ppc ppc64 ~riscv ~s390 sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
+KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE=""
 
 all_ruby_prepare() {