diff --git a/logging.go b/logging.go
index b67c184..b90223f 100644
--- a/logging.go
+++ b/logging.go
@@ -1,8 +1,6 @@
 package logging
 
 import (
-	"flag"
-	"fmt"
 	"log"
 
 	"git.loafle.net/commons_go/config"
@@ -10,33 +8,22 @@ import (
 	"go.uber.org/zap"
 )
 
-var (
-	configPath *string
-)
-
-func init() {
-	configPath = flag.String("log-config-path", "./logging.json", "The path of logger config file")
-	flag.Parse()
-}
-
 var logger *zap.Logger
 
 func Logger() *zap.Logger {
 	if nil == logger {
-		initializeLogger()
-
-		logger.Info(fmt.Sprintf("Logger has been initialized. config[%s]", *configPath))
+		log.Panicf("Initialize Logger first to use Logger")
 	}
 	return logger
 }
 
-func initializeLogger() {
+func InitializeLogger(configPath string) {
 	var cfg zap.Config
 	var err error
 
 	conf := config.New()
 
-	if err = conf.Load(&cfg, *configPath); nil != err {
+	if err = conf.Load(&cfg, configPath); nil != err {
 		log.Printf("Loading of logger config has been failed [%v]", err)
 		if logger, err = zap.NewDevelopment(); nil != err {
 			log.Panicf("Building of logger config[Development] has been failed [%v]", err)
@@ -46,6 +33,6 @@ func initializeLogger() {
 	}
 
 	if logger, err = cfg.Build(); nil != err {
-		log.Panicf("Building of logger config[%s] has been failed [%v]", *configPath, err)
+		log.Panicf("Building of logger config[%s] has been failed [%v]", configPath, err)
 	}
 }