diff --git a/bin/cloud-localds b/bin/cloud-localds
index a9ddc74..50bc46e 100755
--- a/bin/cloud-localds
+++ b/bin/cloud-localds
@@ -146,8 +146,8 @@ case "$filesystem" in
 			fail "missing 'mcopy'. Required for --filesystem=vfat."
 		;;
 	iso9660)
-		has_cmd genisoimage ||
-			fail "missing 'genisoimage'.  Required for --filesystem=iso9660."
+		has_cmd mkisofs ||
+			fail "missing 'mkisofs'.  Required for --filesystem=iso9660."
 		;;
 	*) fail "unknown filesystem $filesystem";;
 esac
@@ -232,9 +232,9 @@ case "$filesystem" in
 			fail "failed to create tarball with $path"
 		;;
 	iso9660)
-		genisoimage -output "$img" -volid cidata \
+		mkisofs -output "$img" -volid cidata \
 			-joliet -rock "${files[@]}" > "$TEMP_D/err" 2>&1 ||
-			{ cat "$TEMP_D/err" 1>&2; fail "failed to genisoimage"; }
+			{ cat "$TEMP_D/err" 1>&2; fail "failed to mkisofs"; }
 		;;
 	vfat)
 		truncate -s 128K "$img" || fail "failed truncate image"