diff --git a/src/lib.rs b/src/lib.rs
index d700595..57e70a4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,7 +11,6 @@
 //! methods for manipulating various page table entries.
 
 #![no_std]
-#![feature(const_trait_impl)]
 #![feature(doc_auto_cfg)]
 #![feature(doc_cfg)]