diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches b/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
index ed728b07c..b67397f1f 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/03_gpio_switches
@@ -6,6 +6,10 @@ board_config_update
 board=$(board_name)
 
 case "$board" in
+huasifei,mt7621dtu)
+	ucidef_add_gpio_switch "modem_enable" "Modem Enable" "modem_enable" "0"
+	ucidef_add_gpio_switch "modem_reset" "Modem Reset" "modem_reset" "1"
+	;;
 mikrotik,routerboard-760igs)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "497"
 	;;
diff --git a/target/linux/ramips/mt7621/base-files/etc/init.d/modem-enable b/target/linux/ramips/mt7621/base-files/etc/init.d/modem-enable
deleted file mode 100755
index f91145988..000000000
--- a/target/linux/ramips/mt7621/base-files/etc/init.d/modem-enable
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh /etc/rc.common
-
-START=99
-
-boot() {
-	case $(board_name) in
-	huasifei,mt7621dtu)
-		echo 1 > /sys/class/gpio/modem_reset/value
-		sleep 5
-		sendat 0 AT+GTUSBMODE=32
-		sendat 0 AT+CGDCONT=2,"IP","CMNET"
-		sendat 0 AT+GTRNDIS=1,2
-		;;
-	esac
-}