diff --git a/maker/golang/xdb/util.go b/maker/golang/xdb/util.go
index 96debc8..45b7427 100644
--- a/maker/golang/xdb/util.go
+++ b/maker/golang/xdb/util.go
@@ -5,7 +5,6 @@
 package xdb
 
 import (
-	"encoding/binary"
 	"fmt"
 	"strconv"
 	"strings"
@@ -19,7 +18,7 @@ func CheckIP(ip string) (uint32, error) {
 		return 0, fmt.Errorf("invalid ip address `%s`", ip)
 	}
 
-	var buff = make([]byte, 4)
+	var val uint32
 	for i, s := range ps {
 		d, err := strconv.Atoi(s)
 		if err != nil {
@@ -30,21 +29,16 @@ func CheckIP(ip string) (uint32, error) {
 			return 0, fmt.Errorf("the %dth part `%s` should be an integer bettween 0 and 255", i, s)
 		}
 
-		buff[i] = byte(d)
+		val |= uint32(d) << ((3 - i) * 8)
 	}
 
 	// convert the ip to integer
 
-	return binary.BigEndian.Uint32(buff), nil
+	return val, nil
 }
 
 func Long2IP(ip uint32) string {
-	var buff = make([]string, 4)
-	buff[0] = fmt.Sprintf("%d", (ip>>24)&0xFF)
-	buff[1] = fmt.Sprintf("%d", (ip>>16)&0xFF)
-	buff[2] = fmt.Sprintf("%d", (ip>>8)&0xFF)
-	buff[3] = fmt.Sprintf("%d", (ip>>0)&0xFF)
-	return strings.Join(buff, ".")
+	return fmt.Sprintf("%d.%d.%d.%d", (ip>>24)&0xFF, (ip>>16)&0xFF, (ip>>8)&0xFF, (ip>>0)&0xFF)
 }
 
 func MidIP(sip uint32, eip uint32) uint32 {