--- eutils.eclass-orig	2006-07-31 02:08:11.000000000 +0100
+++ eutils.eclass	2006-07-31 02:23:00.000000000 +0100
@@ -1582,13 +1582,16 @@
 	local opt=$1
 	[[ ${opt:0:1} = "-" ]] && shift || opt="-a"
 
+	if ! has_version $1 ; then
+		# Package is not installed or package.provided
+		return 1
+	fi
+
 	local PKG=$(best_version $1)
 	shift
 
+	# if the USE file doesn't exist, assume the $PKG is package.provided
 	local USEFILE=${ROOT}/var/db/pkg/${PKG}/USE
-
-	# if the USE file doesnt exist, assume the $PKG is either
-	# injected or package.provided
 	[[ ! -e ${USEFILE} ]] && return 0
 
 	local USE_BUILT=$(<${USEFILE})