diff --git a/external/grpc/pool.go b/external/grpc/pool.go
index 4c98317..dd335e9 100644
--- a/external/grpc/pool.go
+++ b/external/grpc/pool.go
@@ -1,8 +1,6 @@
 package grpc
 
 import (
-	"fmt"
-
 	cgp "git.loafle.net/commons_go/grpc_pool"
 	"git.loafle.net/commons_go/logging"
 	ooas "git.loafle.net/overflow/overflow_api_server/golang"
@@ -22,7 +20,7 @@ func ExternalInit() {
 	grpcPool = cgp.New(ph)
 
 	if err := grpcPool.Start(); nil != err {
-		logging.Logger().Panic(fmt.Sprintf("App: %v", err))
+		logging.Logger().Panicf("App: %v", err)
 		return
 	}
 }
diff --git a/external/redis/pool.go b/external/redis/pool.go
index b381fa1..cb8e45f 100644
--- a/external/redis/pool.go
+++ b/external/redis/pool.go
@@ -1,8 +1,6 @@
 package redis
 
 import (
-	"fmt"
-
 	"git.loafle.net/overflow/overflow_gateway_websocket/config"
 
 	"git.loafle.net/commons_go/logging"
@@ -22,7 +20,7 @@ func ExternalInit() {
 	RedisPool = crp.New(ph)
 
 	if err := RedisPool.Start(); nil != err {
-		logging.Logger().Panic(fmt.Sprintf("App: %v", err))
+		logging.Logger().Panicf("App: %v", err)
 		return
 	}
 }
diff --git a/gateway_websocket.go b/gateway_websocket.go
index c666d70..20b7166 100644
--- a/gateway_websocket.go
+++ b/gateway_websocket.go
@@ -1,19 +1 @@
 package overflow_gateway_websocket
-
-import (
-	"flag"
-
-	cc "git.loafle.net/commons_go/config"
-	"git.loafle.net/overflow/overflow_gateway_websocket/config"
-)
-
-func init() {
-	configPath := flag.String(ConfigPathFlagName, "./", "The path of config file")
-
-	flag.Parse()
-
-	cc.SetConfigPath(*configPath)
-	if err := cc.Load(&config.Config, ConfigFileName); nil != err {
-		panic(err)
-	}
-}
diff --git a/server/server_handlers.go b/server/server_handlers.go
index 5e0b6b9..dd23196 100644
--- a/server/server_handlers.go
+++ b/server/server_handlers.go
@@ -1,7 +1,6 @@
 package server
 
 import (
-	"fmt"
 	"net"
 	"time"
 
@@ -20,7 +19,7 @@ import (
 
 func NewServerHandler() ServerHandler {
 	if nil == config.Config.Server {
-		logging.Logger().Panic(fmt.Sprintf("Gateway Websocket: Config of server is not initialized"))
+		logging.Logger().Panicf("Gateway Websocket: Config of server is not initialized")
 	}
 
 	sh := &ServerHandlers{}
@@ -71,7 +70,7 @@ func (sh *ServerHandlers) OnStart(serverCTX cwf.ServerContext) {
 
 	sh.redisSubscriber = oosr.New(redis.RedisPool.Get())
 	if err := sh.redisSubscriber.Start(); nil != err {
-		logging.Logger().Panic(fmt.Sprintf("Gateway Websocket: Redist Subscriber did not start %v", err))
+		logging.Logger().Panicf("Gateway Websocket: Redist Subscriber did not start %v", err)
 		return
 	}
 
@@ -95,7 +94,7 @@ func (sh *ServerHandlers) OnStop(serverCTX cwf.ServerContext) {
 func (sh *ServerHandlers) RegisterServlet(servletName string, servletHandler servlet.ServletHandler) {
 	cfg := config.Config.Servlets[servletName]
 	if nil == cfg {
-		logging.Logger().Panic(fmt.Sprintf("Gateway Websocket: config of servlet[%s] is not exist", servletName))
+		logging.Logger().Panicf("Gateway Websocket: config of servlet[%s] is not exist", servletName)
 		return
 	}
 
@@ -116,7 +115,7 @@ func (sh *ServerHandlers) RegisterServlet(servletName string, servletHandler ser
 func (sh *ServerHandlers) RegisterRPCGatewayServlet(servletName string, gatewayRPCHandler rpc.GatewayRPCHandler) servlet.ServletHandler {
 	cfg := config.Config.Servlets[servletName]
 	if nil == cfg {
-		logging.Logger().Panic(fmt.Sprintf("Gateway Websocket: config of servlet[%s] is not exist", servletName))
+		logging.Logger().Panicf("Gateway Websocket: config of servlet[%s] is not exist", servletName)
 		return nil
 	}
 
diff --git a/subscribe/subscriber_handlers.go b/subscribe/subscriber_handlers.go
index ced26e1..83a7b11 100644
--- a/subscribe/subscriber_handlers.go
+++ b/subscribe/subscriber_handlers.go
@@ -1,8 +1,6 @@
 package subscribe
 
 import (
-	"fmt"
-
 	"git.loafle.net/commons_go/logging"
 	cwf "git.loafle.net/commons_go/websocket_fasthttp"
 	"git.loafle.net/overflow/overflow_gateway_websocket/servlet"
@@ -27,6 +25,6 @@ func (sh *SubscriberHandlers) Validate() {
 	sh.SubscriberHandlers.Validate()
 
 	if nil == sh.ServletHandler {
-		logging.Logger().Panic(fmt.Sprintf("Gateway Websocket: servletHandler must be specified"))
+		logging.Logger().Panicf("Gateway Websocket: servletHandler must be specified")
 	}
 }