diff --git a/scripts/Create-ISO b/scripts/Create-ISO
index 19fb3916f..5be42584f 100755
--- a/scripts/Create-ISO
+++ b/scripts/Create-ISO
@@ -251,7 +251,7 @@ for x in $disks ; do
 	date "+  [%X] Creating ${isoprefix}_cd$x.iso ..."
 	echo "This is disk #$x." > $dat
 	# FIXME: current mkisofs does only accept one -path-list
-	cat ${pathspec}_${x} ${pathspec}_0 > ${pathspec}_current 2> /dev/null
+	sort -u ${pathspec}_${x} ${pathspec}_0 > ${pathspec}_current 2> /dev/null
 	xxx -q -r -T -J -l -o ${isoprefix}_cd$x.iso -A "ROCK Linux - Disk $x" \
 	    -P 'The ROCK Linux Project - http://www.rocklinux.org' \
 	    -path-list ${pathspec}_current \