diff --git a/shed/trait_alias/test/trait_alias_test.rs b/shed/trait_alias/test/trait_alias_test.rs
index 9e5418a7e..625b8660f 100644
--- a/shed/trait_alias/test/trait_alias_test.rs
+++ b/shed/trait_alias/test/trait_alias_test.rs
@@ -7,6 +7,8 @@
  * of this source tree.
  */
 
+#![feature(trait_alias)]
+
 trait One {
     fn one(&self) -> u32;
 }