diff --git a/AsyncFunction.md b/AsyncFunction.md
index fca7664..fead05d 100644
--- a/AsyncFunction.md
+++ b/AsyncFunction.md
@@ -7,9 +7,13 @@ JScript does not support the `async` keyword. So, Wilson JS uses the `AsyncFunct
 ```js
 var STD = require("lib/std");
 
-[5, 4, 3, 2, 1].forEach(function(x) {
-    new AsyncFunction(function() {
-        sleep(x * 1000);
-    }).run();
-});
+function main(args) {
+    [5, 4, 3, 2, 1].forEach(function(x) {
+        new AsyncFunction(function() {
+            sleep(x * 1000);
+        }).run();
+    });
+}
+
+exports.main = main;
 ```