--- a/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild	
+++ a/dev-cpp/ms-gsl/ms-gsl-3.1.0.ebuild	
@@ -13,7 +13,7 @@ S="${WORKDIR}/GSL-${PV}"
 
 LICENSE="MIT"
 SLOT="0"
-KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv x86"
+KEYWORDS="amd64 ~arm ~arm64 ~ppc ~ppc64 x86"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
--- a/dev-cpp/range-v3/range-v3-0.11.0.ebuild	
+++ a/dev-cpp/range-v3/range-v3-0.11.0.ebuild	
@@ -11,7 +11,7 @@ SRC_URI="https://github.com/ericniebler/${PN}/archive/${PV}.tar.gz -> ${P}.tar.g
 
 LICENSE="Boost-1.0"
 SLOT="0"
-KEYWORDS="amd64 ~ppc64 ~riscv"
+KEYWORDS="amd64 ~ppc64"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
--- a/media-libs/libtgvoip/libtgvoip-2.4.4_p20211129.ebuild	
+++ a/media-libs/libtgvoip/libtgvoip-2.4.4_p20211129.ebuild	
@@ -14,7 +14,7 @@ S="${WORKDIR}/${PN}-${LIBTGVOIP_COMMIT}"
 
 LICENSE="Unlicense"
 SLOT="0"
-KEYWORDS="~amd64 ~ppc64 ~riscv"
+KEYWORDS="~amd64 ~ppc64"
 IUSE="+dsp +alsa pulseaudio"
 
 DEPEND="
--- a/media-libs/rnnoise/rnnoise-0.4.1_p20210122.ebuild	
+++ a/media-libs/rnnoise/rnnoise-0.4.1_p20210122.ebuild	
@@ -14,7 +14,7 @@ S="${WORKDIR}/${PN}-${COMMIT}"
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="amd64 ~arm ~arm64 ~ppc64 ~riscv ~x86"
+KEYWORDS="amd64 ~arm ~arm64 ~ppc64 ~x86"
 IUSE="doc"
 # NOTE: Documentation currently empty (version 0.4.1_p20210122)
 
--- a/media-libs/tg_owt/tg_owt-0_pre20211207.ebuild	
+++ a/media-libs/tg_owt/tg_owt-0_pre20211207.ebuild	
@@ -17,7 +17,7 @@ S="${WORKDIR}/${PN}-${TG_OWT_COMMIT}"
 
 LICENSE="BSD"
 SLOT="0/${PV##*pre}"
-KEYWORDS="~amd64 ~ppc64 ~riscv"
+KEYWORDS="~amd64 ~ppc64"
 IUSE="screencast +X"
 
 # This package's USE flags may change the ABI and require a rebuild of
--- a/net-im/telegram-desktop/telegram-desktop-3.3.0.ebuild	
+++ a/net-im/telegram-desktop/telegram-desktop-3.3.0.ebuild	
@@ -15,7 +15,7 @@ SRC_URI="https://github.com/telegramdesktop/tdesktop/releases/download/v${PV}/${
 
 LICENSE="BSD GPL-3-with-openssl-exception LGPL-2+"
 SLOT="0"
-KEYWORDS="~amd64 ~ppc64 ~riscv"
+KEYWORDS="~amd64 ~ppc64"
 IUSE="+dbus enchant +hunspell screencast +spell wayland +X"
 REQUIRED_USE="
 	spell? (
--- a/net-libs/usrsctp/usrsctp-0.9.5.0.ebuild	
+++ a/net-libs/usrsctp/usrsctp-0.9.5.0.ebuild	
@@ -11,7 +11,7 @@ SRC_URI="https://github.com/sctplab/usrsctp/archive/${PV}.tar.gz -> ${P}.tar.gz"
 
 LICENSE="BSD"
 SLOT="0"
-KEYWORDS="amd64 ~ppc64 ~riscv ~x86"
+KEYWORDS="amd64 ~ppc64 ~x86"
 
 DOCS=( LICENSE.md Manual.md README.md )
 PATCHES=( "${FILESDIR}/${P}-pc-inc-path.patch" )