diff --git a/README.md b/README.md
index 2fdb8d2631b8bc2c07fbb93ed350783ca39b1069..ab15f6a5e3a2fc4dc011e7e97fe0faa7b3817761 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@
 - 示例
 
 ```scala
-class TestClass(val i: Int = 0, var j: Int) {
+@toString class TestClass(val i: Int = 0, var j: Int) {
   val y: Int = 0
   var z: String = "hello"
   var x: String = "world"