diff --git a/README.md b/README.md
index 2e06cccc..03e4a099 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,8 @@ and
 for the annotated type:
 
 ```rust
-#[feature(custom_derive, plugin)]
-#[plugin(serde_macros)]
+#![feature(custom_derive, plugin)]
+#![plugin(serde_macros)]
 
 extern crate serde;