diff --git a/library/alloc/tests/lib.rs b/library/alloc/tests/lib.rs
index d6d2b055b23..2a93a242d51 100644
--- a/library/alloc/tests/lib.rs
+++ b/library/alloc/tests/lib.rs
@@ -1,7 +1,6 @@
 #![feature(allocator_api)]
 #![feature(alloc_layout_extra)]
 #![feature(assert_matches)]
-#![feature(box_syntax)]
 #![feature(btree_drain_filter)]
 #![feature(cow_is_borrowed)]
 #![feature(const_box)]