diff --git a/macros/src/lib.rs b/macros/src/lib.rs
index ad0595ef..f374f28f 100644
--- a/macros/src/lib.rs
+++ b/macros/src/lib.rs
@@ -7,7 +7,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(quote, rustc_private, rc_unique)]
+#![feature(quote, rustc_private)]
 #![deny(warnings)]
 
 extern crate syntax;
diff --git a/src/lib.rs b/src/lib.rs
index 5259aef0..266c4a89 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,7 +10,7 @@
 #![crate_name="html5ever"]
 #![crate_type="dylib"]
 
-#![cfg_attr(feature = "unstable", feature(plugin, rc_weak))]
+#![cfg_attr(feature = "unstable", feature(plugin))]
 #![cfg_attr(test, deny(warnings))]
 #![allow(unused_parens)]