diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 7c08d1703cc7c..b5458e667ed5f 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -166,7 +166,6 @@
 #![feature(const_slice_split_at_mut)]
 #![feature(const_str_from_utf8_unchecked_mut)]
 #![feature(const_swap)]
-#![feature(const_transmute_copy)]
 #![feature(const_try)]
 #![feature(const_type_id)]
 #![feature(const_type_name)]
diff --git a/library/core/src/mem/mod.rs b/library/core/src/mem/mod.rs
index bc701d97bbb1b..d7abc9a0e23aa 100644
--- a/library/core/src/mem/mod.rs
+++ b/library/core/src/mem/mod.rs
@@ -1051,7 +1051,7 @@ pub const fn copy<T: Copy>(x: &T) -> T {
 #[inline]
 #[must_use]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature = "const_transmute_copy", issue = "83165")]
+#[rustc_const_stable(feature = "const_transmute_copy", since = "CURRENT_RUSTC_VERSION")]
 pub const unsafe fn transmute_copy<Src, Dst>(src: &Src) -> Dst {
     assert!(
         size_of::<Src>() >= size_of::<Dst>(),