diff --git a/macros/src/lib.rs b/macros/src/lib.rs
index ec458ec2..45145dc8 100644
--- a/macros/src/lib.rs
+++ b/macros/src/lib.rs
@@ -10,7 +10,7 @@
 #![crate_name="html5ever_macros"]
 #![crate_type="dylib"]
 
-#![feature(plugin_registrar, quote, old_orphan_check)]
+#![feature(plugin_registrar, quote)]
 #![feature(rustc_private, std_misc, core, hash, collections, path, io)]
 #![deny(warnings)]