diff --git a/src/librustc_incremental/lib.rs b/src/librustc_incremental/lib.rs
index 7ce4def2886..ca824fde7ef 100644
--- a/src/librustc_incremental/lib.rs
+++ b/src/librustc_incremental/lib.rs
@@ -3,7 +3,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(in_band_lifetimes)]
 #![feature(nll)]
-#![feature(specialization)]
 #![recursion_limit = "256"]
 
 #[macro_use]