diff --git a/packages/runtime-dom/README.md b/packages/runtime-dom/README.md
index 07cbf6128..2ac2c4de8 100644
--- a/packages/runtime-dom/README.md
+++ b/packages/runtime-dom/README.md
@@ -9,5 +9,5 @@ const RootComponent = {
   }
 }
 
-createApp().mount(RootComponent, '#app')
+createApp(RootComponent).mount('#app')
 ```