@@ -57,7 +57,7 @@ func New(info logger.Info) (logger.Logger, error) {

 			return nil, fmt.Errorf("max-size must be a positive number")

 		}

 	}

-	var maxFiles = 1

+	maxFiles := 1

 	if maxFileString, ok := info.Config["max-file"]; ok {

 		var err error

 		maxFiles, err = strconv.Atoi(maxFileString)

@@ -104,7 +104,7 @@ func New(info logger.Info) (logger.Logger, error) {

 		}

 	}

-	writer, err := loggerutils.NewLogFile(info.LogPath, capval, maxFiles, compress, decodeFunc, 0640, getTailReader)

+	writer, err := loggerutils.NewLogFile(info.LogPath, capval, maxFiles, compress, decodeFunc, 0o640, getTailReader)

 	if err != nil {

 		return nil, err

 	}

@@ -20,7 +20,7 @@ type JSONLogs struct {

 // MarshalJSONBuf is an optimized JSON marshaller that avoids reflection

 // and unnecessary allocation.

 func (mj *JSONLogs) MarshalJSONBuf(buf *bytes.Buffer) error {

-	var first = true

+	first := true

 	buf.WriteString(`{`)

 	if len(mj.Log) != 0 {