diff --git a/www-client/firefox/firefox-100.0.ebuild b/www-client/firefox/firefox-100.0.ebuild
index f5e1829e3f49e..fea184a085c98 100644
--- a/www-client/firefox/firefox-100.0.ebuild
+++ b/www-client/firefox/firefox-100.0.ebuild
@@ -64,7 +64,7 @@ LICENSE="MPL-2.0 GPL-2 LGPL-2.1"
 
 IUSE="+clang cpu_flags_arm_neon dbus debug eme-free hardened hwaccel"
 IUSE+=" jack libproxy lto +openh264 pgo pulseaudio sndio selinux"
-IUSE+=" +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent +system-libvpx system-png system-python +system-webp"
+IUSE+=" +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent +system-libvpx system-png system-python-libs +system-webp"
 IUSE+=" wayland wifi"
 
 # Firefox-only IUSE
@@ -954,7 +954,7 @@ src_configure() {
 	# Use system's Python environment
 	PIP_NETWORK_INSTALL_RESTRICTED_VIRTUALENVS=mach
 
-	if use system-python; then
+	if use system-python-libs; then
 		export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="system"
 	else
 		export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="none"
diff --git a/www-client/firefox/metadata.xml b/www-client/firefox/metadata.xml
index 1c1a269e5cd34..ab14fcbd11aa2 100644
--- a/www-client/firefox/metadata.xml
+++ b/www-client/firefox/metadata.xml
@@ -35,7 +35,7 @@
 		instead of bundled</flag>
 	<flag name="system-png">Use the system-wide <pkg>media-libs/libpng</pkg>
 		instead of bundled (requires APNG patches)</flag>
-	<flag name="system-python">Use system's python site instead of bundled python libraries</flag>
+	<flag name="system-python-libs">Use system's python site instead of bundled python libraries</flag>
 	<flag name="system-webp">Use the system-wide <pkg>media-libs/libwebp</pkg>
 		instead of bundled</flag>
 </use>