diff --git a/README.md b/README.md
index 2928798d..06d8a005 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ $producer->success(function($result) {
 $producer->error(function($errorCode, $context) {
 		var_dump($errorCode);
 });
-$producer->send();
+$producer->send(true);
 ```
 
 ### Synchronous mode
diff --git a/README_CH.md b/README_CH.md
index b04d848e..acf7d790 100644
--- a/README_CH.md
+++ b/README_CH.md
@@ -78,7 +78,7 @@ $producer->success(function($result) {
 $producer->error(function($errorCode, $context) {
 	var_dump($errorCode);
 });
-$producer->send();
+$producer->send(true);
 ```
 
 ### 同步方式调用生产者
diff --git a/example/Producer.php b/example/Producer.php
index a69ce0da..06a0341e 100644
--- a/example/Producer.php
+++ b/example/Producer.php
@@ -31,4 +31,4 @@
 $producer->error(function($errorCode) {
 	var_dump($errorCode);
 });
-$producer->send();
+$producer->send(true);