diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index 4177e0666e3a5..b53b61e517397 100644
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -155,7 +155,7 @@ pub fn size_of_val<T: ?Sized>(val: &T) -> usize {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[deprecated(reason = "use `align_of` instead", since = "1.1.0")]
+#[deprecated(reason = "use `align_of` instead", since = "1.2.0")]
 pub fn min_align_of<T>() -> usize {
     unsafe { intrinsics::min_align_of::<T>() }
 }
@@ -171,7 +171,7 @@ pub fn min_align_of<T>() -> usize {
 /// ```
 #[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
-#[deprecated(reason = "use `align_of_val` instead", since = "1.1.0")]
+#[deprecated(reason = "use `align_of_val` instead", since = "1.2.0")]
 pub fn min_align_of_val<T: ?Sized>(val: &T) -> usize {
     unsafe { intrinsics::min_align_of_val(val) }
 }