diff --git a/src/lib.rs b/src/lib.rs
index 2ce93a664..d15519052 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,7 +4,6 @@
 #![feature(abi_x86_interrupt)]
 #![feature(alloc_error_handler)]
 #![feature(const_fn)]
-#![feature(alloc_layout_extra)]
 #![feature(const_in_array_repeat_expressions)]
 #![feature(wake_trait)]
 #![test_runner(crate::test_runner)]