diff --git a/internal/db/models/sys_locker_dao.go b/internal/db/models/sys_locker_dao.go
index 3169bcfd..51a053e2 100644
--- a/internal/db/models/sys_locker_dao.go
+++ b/internal/db/models/sys_locker_dao.go
@@ -157,7 +157,7 @@ func (this *SysLockerDAO) Increase(tx *dbs.Tx, key string, defaultValue int64) (
 	}
 
 	// combine statements to make increasing faster
-	colValue, err := tx.FindCol(0, "INSERT INTO `"+this.Table+"` (`key`, `version`) VALUES ('"+key+"', "+types.String(defaultValue)+") ON DUPLICATE KEY UPDATE `version`=`version`+"+types.String(sysLockerStep)+"; SELECT `version` FROM `"+this.Table+"` WHERE `key`='"+key+"'")
+	colValue, err := tx.FindCol(0, "INSERT INTO `"+this.Table+"` (`key`, `version`) VALUES ('"+key+"', "+types.String(defaultValue+sysLockerStep)+") ON DUPLICATE KEY UPDATE `version`=`version`+"+types.String(sysLockerStep)+"; SELECT `version` FROM `"+this.Table+"` WHERE `key`='"+key+"'")
 	if err != nil {
 		if CheckSQLErrCode(err, 1064 /** syntax error **/) {
 			// continue to use seperated query
diff --git a/internal/db/models/sys_locker_dao_test.go b/internal/db/models/sys_locker_dao_test.go
index 40b774f6..42aa61e1 100644
--- a/internal/db/models/sys_locker_dao_test.go
+++ b/internal/db/models/sys_locker_dao_test.go
@@ -43,6 +43,25 @@ func TestSysLocker_Increase_SQL(t *testing.T) {
 	t.Log("after:", v)
 }
 
+func TestSysLocker_Increase_New_Key(t *testing.T) {
+	var key = "KEY" + types.String(time.Now().Unix())
+
+	var dao = NewSysLockerDAO()
+	value, err := dao.Read(nil, key)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log("before:", value)
+	for i := 0; i < 2; i++ {
+		v, err := dao.Increase(nil, key, 0)
+		if err != nil {
+			t.Log("err:", err)
+			return
+		}
+		t.Log("after:", v)
+	}
+}
+
 func TestSysLocker_Increase_Cache(t *testing.T) {
 	var dao = NewSysLockerDAO()
 	for i := 0; i < 11; i++ {