diff --git a/tests/run-pass/stacked-borrows/interior_mutability.rs b/tests/run-pass/stacked-borrows/interior_mutability.rs
index 87624e520db1..23d82b8e435b 100644
--- a/tests/run-pass/stacked-borrows/interior_mutability.rs
+++ b/tests/run-pass/stacked-borrows/interior_mutability.rs
@@ -1,4 +1,3 @@
-#![feature(maybe_uninit_extra)]
 use std::mem::MaybeUninit;
 use std::cell::{Cell, RefCell, UnsafeCell};