diff --git a/client/client.go b/client/client.go
index fae49d3..aade5e8 100644
--- a/client/client.go
+++ b/client/client.go
@@ -279,7 +279,8 @@ LOOP:
 				logging.Logger().Debug(err)
 				continue LOOP
 			}
-			if nil == resCodec.ID() {
+
+			if resCodec.IsNotification() {
 				// notification
 				notiCodec, err := resCodec.Notification()
 				if nil != err {
diff --git a/protocol/client_codec.go b/protocol/client_codec.go
index 92d9fd1..bb417cc 100644
--- a/protocol/client_codec.go
+++ b/protocol/client_codec.go
@@ -7,6 +7,7 @@ type ClientCodec interface {
 }
 
 type ClientResponseCodec interface {
+	IsNotification() bool
 	Notification() (ClientNotificationCodec, error)
 	Result(result interface{}) error
 	Error() *Error
diff --git a/protocol/json/client_response.go b/protocol/json/client_response.go
index 611c917..3feb036 100644
--- a/protocol/json/client_response.go
+++ b/protocol/json/client_response.go
@@ -42,6 +42,13 @@ func (crc *ClientResponseCodec) Error() *protocol.Error {
 	return crc.res.Error
 }
 
+func (crc *ClientResponseCodec) IsNotification() bool {
+	if nil == crc.res.ID && nil != crc.res.Result {
+		return true
+	}
+	return false
+}
+
 func (crc *ClientResponseCodec) Notification() (protocol.ClientNotificationCodec, error) {
 	if nil != crc.res.ID || nil == crc.res.Result {
 		return nil, fmt.Errorf("This is not notification")