diff --git a/utils/serial.go b/utils/serial.go
index 9c3665c..06c1855 100644
--- a/utils/serial.go
+++ b/utils/serial.go
@@ -1,27 +1,28 @@
 package utils
 
 import (
-	"github.com/tarm/serial"
 	"io"
 	"log"
 	"time"
+
+	"github.com/tarm/serial"
 )
 
-var(
-	device string
-	baudrate int
-	bytesize byte
-	port  *serial.Port
-	portOpened bool
+var (
+	device     string
+	baudrate   int
+	bytesize   byte
+	port       *serial.Port
+	portOpened = false
 )
 
 func OpenPort(device string, baudrate int, bytesize byte) error {
-	log.Println("opening port device:", device, ", baudrate=", baudrate, ", bytesize=",bytesize)
+	log.Println("opening port device:", device, ", baudrate=", baudrate, ", bytesize=", bytesize)
 	config := &serial.Config{Name: device, Baud: baudrate, Size: bytesize, ReadTimeout: time.Second * 1}
 	var err error
 	port, err = serial.OpenPort(config)
-	if err!=nil {
-		log.Fatalln("error in open serial port ",   err)
+	if err != nil {
+		log.Fatalln("error in open serial port ", err)
 		return err
 	}
 	log.Println("opened port ", port)
@@ -29,12 +30,12 @@ func OpenPort(device string, baudrate int, bytesize byte) error {
 	return nil
 }
 
-func ReadPort() ([]byte, int){
+func ReadPort() ([]byte, int) {
 	buffer := make([]byte, 256)
 	if !ServerRunning {
 		return buffer, 0
 	}
-	count,err := port.Read(buffer)
+	count, err := port.Read(buffer)
 	if err != nil && err != io.EOF {
 		log.Println("error in read port ", err)
 		//TODO: 3 time fail try to
@@ -45,4 +46,3 @@ func ReadPort() ([]byte, int){
 func IsPortOpen() bool {
 	return portOpened
 }
-