--- portage-2.1.0_alpha20050718.orig/bin/ebuild-default-functions.sh
+++ portage-2.1.0_alpha20050718/bin/ebuild-default-functions.sh
@@ -1079,8 +1079,18 @@
 	local x
 
 	# Make sure we have this USE flag in IUSE
-	if ! hasq "${u}" ${IUSE} ${E_IUSE} && ! hasq "${u}" ${PORTAGE_ARCHLIST} selinux; then
-		echo "QA Notice: USE Flag '${u}' not in IUSE for ${CATEGORY}/${PF}" >&2
+	if ! hasq "${u}" ${IUSE} ${E_IUSE} ${PORTAGE_ARCHLIST} selinux; then
+		local e
+		x=notexpanded
+		for e in ${USE_EXPAND_LOWER=$(echo ${USE_EXPAND} | tr '[:upper:]' '[:lower:]')}; do
+			if [[ ${u} == ${e}_* ]]; then
+				x=expanded
+				break
+			fi
+		done
+		if [ "${x}" == notexpanded ]; then
+			echo "QA Notice: USE Flag '${u}' not in IUSE for ${CATEGORY}/${PF}" >&2
+		fi
 	fi
 
 	for x in ${USE}; do