diff --git a/glide.yaml b/glide.yaml
index 4625fd5..88d38f8 100644
--- a/glide.yaml
+++ b/glide.yaml
@@ -17,4 +17,3 @@ import:
 - package: git.loafle.net/commons_go/util
   subpackages:
   - channel
-- package: git.loafle.net/commons_go/logging
diff --git a/protocol/jsonrpc/handler.go b/protocol/jsonrpc/handler.go
index 945c240..4f17cc3 100644
--- a/protocol/jsonrpc/handler.go
+++ b/protocol/jsonrpc/handler.go
@@ -4,10 +4,8 @@ import (
 	"context"
 	"encoding/json"
 	"io"
+	"log"
 
-	"go.uber.org/zap"
-
-	"git.loafle.net/commons_go/logging"
 	gws "git.loafle.net/overflow/overflow_gateway_websocket"
 )
 
@@ -16,16 +14,14 @@ type MessageHandler interface {
 }
 
 type messageHandler struct {
-	ctx    context.Context
-	logger *zap.Logger
-	o      *Options
+	ctx context.Context
+	o   *Options
 }
 
 func NewHandler(ctx context.Context, o *Options) MessageHandler {
 	h := &messageHandler{
-		ctx:    ctx,
-		logger: logging.WithContext(ctx),
-		o:      o,
+		ctx: ctx,
+		o:   o,
 	}
 
 	return h
@@ -62,7 +58,7 @@ func (h *messageHandler) onRequest(soc gws.Socket, req *ServerRequest) []byte {
 
 	j, err := json.Marshal(res)
 	if nil != err {
-		h.logger.Error("JSON RPC error", zap.Any("err", err))
+		log.Printf("JSON RPC error: %v", err)
 	}
 
 	return j
@@ -71,6 +67,6 @@ func (h *messageHandler) onRequest(soc gws.Socket, req *ServerRequest) []byte {
 func (h *messageHandler) onNotify(soc gws.Socket, req *ServerRequest) {
 	err := h.o.OnNotify(soc, req.Method, req.Params)
 	if nil != err {
-		h.logger.Error("JSON RPC error", zap.Any("err", err))
+		log.Printf("JSON RPC error: %v", err)
 	}
 }
diff --git a/server.go b/server.go
index 0528fa2..4d14946 100644
--- a/server.go
+++ b/server.go
@@ -4,9 +4,6 @@ import (
 	"context"
 	"net/http"
 
-	"go.uber.org/zap"
-
-	"git.loafle.net/commons_go/logging"
 	channelUtil "git.loafle.net/commons_go/util/channel"
 	"git.loafle.net/overflow/overflow_gateway_websocket/websocket"
 	"github.com/valyala/fasthttp"
@@ -26,7 +23,6 @@ type Server interface {
 
 type server struct {
 	_ctx       context.Context
-	_logger    *zap.Logger
 	_option    *ServerOptions
 	_upgrader  *websocket.Upgrader
 	_handlers  map[string]*SocketOptions
@@ -37,7 +33,6 @@ type server struct {
 func NewServer(ctx context.Context, o *ServerOptions) Server {
 	s := &server{
 		_ctx:       ctx,
-		_logger:    logging.WithContext(ctx),
 		_option:    o.Validate(),
 		_handlers:  make(map[string]*SocketOptions, 1),
 		_sockets:   make(map[string]Socket, 100),
@@ -110,7 +105,6 @@ func (s *server) listenHandler() {
 	for {
 		select {
 		case <-s._ctx.Done():
-			s._logger.Info("websocket server: Context Done")
 			return
 		case ca := <-s._socketsCh:
 			switch ca.Type {
diff --git a/socket.go b/socket.go
index 1e98aa1..20f73c1 100644
--- a/socket.go
+++ b/socket.go
@@ -3,11 +3,9 @@ package overflow_gateway_websocket
 import (
 	"context"
 	"io"
+	"log"
 	"time"
 
-	"go.uber.org/zap"
-
-	"git.loafle.net/commons_go/logging"
 	"git.loafle.net/overflow/overflow_gateway_websocket/websocket"
 )
 
@@ -21,7 +19,6 @@ type Socket interface {
 
 type socket struct {
 	ctx          context.Context
-	logger       *zap.Logger
 	id           string
 	o            *SocketOptions
 	conn         *websocket.Conn
@@ -34,7 +31,6 @@ type socket struct {
 func NewSocket(ctx context.Context, id string, path string, o *SocketOptions, conn *websocket.Conn) Socket {
 	c := &socket{
 		ctx:          ctx,
-		logger:       logging.WithContext(ctx),
 		id:           id,
 		o:            o,
 		conn:         conn,
@@ -112,12 +108,12 @@ func (soc *socket) listenWrite() {
 		case w := <-soc.writeCh:
 			if writeTimeout := soc.o.WriteTimeout; writeTimeout > 0 {
 				err := soc.conn.SetWriteDeadline(time.Now().Add(writeTimeout))
-				soc.logger.Error("Socket timeout", zap.Any("err", err))
+				log.Printf("Socket timeout: %v", err)
 			}
 
 			err := soc.conn.WriteMessage(soc.messageType, w)
 			if nil != err {
-				soc.logger.Error("Socket Write error", zap.Any("err", err))
+				log.Printf("Socket Write error: %v", err)
 			}
 
 		// receive done request