diff --git a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
index 42ed7d1b9..351cac58b 100755
--- a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
+++ b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
@@ -20,7 +20,7 @@ omr_intf_set() {
 	local ifname
 	config_get ifname "$1" device
 	[ -z "$ifname" ] && config_get ifname "$1" ifname
-	config_get device "$1" device
+	config_get devicename "$1" _modem_device
 	config_get type "$1" type
 
 	[ -z "$ifname" ] && ifname=$(ifstatus "$1" | jsonfilter -q -e '@["l3_device"]')
@@ -39,7 +39,7 @@ omr_intf_set() {
 			uci -q delete network.$1.modalias
 			uci -q delete network.$1.product
 		fi
-	elif [ "$type" != "macvlan" ] &&  [ -n "$device" ] && [ -f /sys/bus/usb-serial/devices/${devicename}/device/uevent ] && [ "$(cat /sys/class/net/${ifname}/device/uevent | grep PRODUCT)" != "" ]; then
+	elif [ "$type" != "macvlan" ] &&  [ -n "$devicename" ] && [ -f /sys/bus/usb-serial/devices/${devicename}/device/uevent ] && [ "$(cat /sys/class/net/${ifname}/device/uevent | grep PRODUCT)" != "" ]; then
 		mac=""
 		if [ -f /sys/class/net/${ifname}/address ]; then
 			mac="$(cat /sys/class/net/${ifname}/address | tr -d '\n')"