diff --git a/packages/radio/README.md b/packages/radio/README.md
index 5e95ae25..093c0883 100644
--- a/packages/radio/README.md
+++ b/packages/radio/README.md
@@ -32,7 +32,7 @@ Page({
 
   onChange(event) {
     this.setData({
-      checked: event.detail
+      radio: event.detail
     });
   }
 });