diff --git a/dev-cpp/muParser/muParser-2.2.6.1.ebuild b/dev-cpp/muParser/muParser-2.2.6.1.ebuild
index 15e8213cc66a0..9dd3c11392028 100644
--- a/dev-cpp/muParser/muParser-2.2.6.1.ebuild
+++ b/dev-cpp/muParser/muParser-2.2.6.1.ebuild
@@ -10,7 +10,7 @@ S="${WORKDIR}"/muparser-${PV}
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 x86 ~amd64-linux ~x86-linux ~ppc-macos"
+KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv x86 ~amd64-linux ~x86-linux ~ppc-macos"
 IUSE="doc test"
 RESTRICT="!test? ( test )"