diff --git a/src/libserialize/lib.rs b/src/libserialize/lib.rs
index 280fb078f7de4..b990e71bef0dd 100644
--- a/src/libserialize/lib.rs
+++ b/src/libserialize/lib.rs
@@ -10,7 +10,6 @@ Core encoding and decoding interfaces.
     test(attr(allow(unused_variables), deny(warnings)))
 )]
 #![feature(box_syntax)]
-#![feature(core_intrinsics)]
 #![feature(specialization)]
 #![feature(never_type)]
 #![feature(nll)]