diff --git a/mptcp/files/etc/init.d/mptcp b/mptcp/files/etc/init.d/mptcp
index 54d5992c8..53279a243 100755
--- a/mptcp/files/etc/init.d/mptcp
+++ b/mptcp/files/etc/init.d/mptcp
@@ -74,10 +74,10 @@ interface_multipath_settings() {
 		uci -q set network.${config}.peerdns=0
 	}
 	[ "$mode" = "master" ] && {
-		mode="on"
 		# Force that only one interface is master
 		if [ "$master" != "" ]; then
 			logger -t "MPTCP" "Multipath master already set, disable master for $config"
+			mode="on"
 			config_set "$config" multipath "on"
 			uci -q set network.${config}.multipath="on"
 			uci -q set openmptcprouter.${config}.multipath="on"