1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 91cc6d25cce..a8049e676b3 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -296,7 +296,6 @@
 #![feature(ptr_internals)]
 #![feature(rand)]
 #![feature(raw)]
-#![feature(repr_align)]
 #![feature(rustc_attrs)]
 #![feature(sip_hash_13)]
 #![feature(slice_bytes)]
@@ -323,6 +322,7 @@
 #![feature(doc_spotlight)]
 #![cfg_attr(test, feature(update_panic_count))]
 #![cfg_attr(windows, feature(used))]
+#![cfg_attr(stage0, feature(repr_align))]
 
 #![default_lib_allocator]