diff --git a/mptcp/files/etc/init.d/mptcp b/mptcp/files/etc/init.d/mptcp
index 64a1cd6628..87e7bbe6a8 100755
--- a/mptcp/files/etc/init.d/mptcp
+++ b/mptcp/files/etc/init.d/mptcp
@@ -125,6 +125,7 @@ interface_multipath_settings() {
 	else
 		metric="$(uci -q get openmptcprouter.${config}.metric)"
 	fi
+	[ "$metric" -gt 9900 ] && metric=$((metric-9000))
 	if [ "${config}" = "lan" ] || [ "$(uci -q get network.${config}.ip4table)" = "lan" ]; then
 		metric="9999"
 	fi