diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 637323331f58..042e3b55cc99 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -103,7 +103,6 @@
 //! More documentation can be found in each respective module below, and you can
 //! also check out the `src/bootstrap/README.md` file for more information.
 
-#![feature(core_intrinsics)]
 #![feature(drain_filter)]
 
 use std::cell::{Cell, RefCell};