diff --git a/RELEASES.md b/RELEASES.md
index 412a8d9c2d63..83eb49a3fe64 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -91,7 +91,7 @@ Stabilized APIs
 - [`<str>::from_utf8_unchecked`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.from_utf8_unchecked)
 - [`<str>::from_utf8_unchecked_mut`](https://doc.rust-lang.org/stable/std/primitive.str.html#method.from_utf8_unchecked_mut)
 
-These APIs are now stable in const contexts:
+These previously stable APIs are now stable in const contexts:
 
 - [`core::str::from_utf8_mut`](https://doc.rust-lang.org/stable/std/str/fn.from_utf8_mut.html)
 - [`<[T]>::copy_from_slice`](https://doc.rust-lang.org/stable/std/primitive.slice.html#method.copy_from_slice)