diff --git a/README.md b/README.md
index b821b15..b492d46 100644
--- a/README.md
+++ b/README.md
@@ -166,9 +166,9 @@ func main() {
 
 Client applies method `UseCallRpcMiddleware` to set middleware for hooking `callRpc` method which is the core of all single rpc related methods. And `UseBatchCallRpcMiddleware` to set middleware for hooking `batchCallRPC`.
 
-For example, use `CallRpcLogMiddleware` to log for rpc requests.
+For example, use `CallRpcConsoleMiddleware` to log for rpc requests.
 ```golang
-client.UseCallRpcMiddleware(middleware.CallRpcLogMiddleware)
+client.UseCallRpcMiddleware(middleware.CallRpcConsoleMiddleware)
 ```
 
 Also you could 
diff --git a/example/context/prepare.go b/example/context/prepare.go
index a8298a7..09e7952 100644
--- a/example/context/prepare.go
+++ b/example/context/prepare.go
@@ -83,10 +83,10 @@ func initClient() {
 
 	// init retry client
 	option := sdk.ClientOption{
-		KeystorePath:   keyStorePath,
-		RetryCount:     10,
-		RetryInterval:  time.Second,
-		RequestTimeout: time.Second * 10,
+		KeystorePath:  keyStorePath,
+		RetryCount:    10,
+		RetryInterval: time.Second,
+		// RequestTimeout: time.Second * 10,
 	}
 	retryclient, err := sdk.NewClient(config.NodeURL, option)
 	if err != nil {