diff --git a/tests/ui/pin_project/project_replace_unsized.stderr b/tests/ui/pin_project/project_replace_unsized.stderr
index f77b2b64..87e0a6dc 100644
--- a/tests/ui/pin_project/project_replace_unsized.stderr
+++ b/tests/ui/pin_project/project_replace_unsized.stderr
@@ -60,11 +60,11 @@ error[E0277]: the size for values of type `T` cannot be known at compilation tim
 7 |     f: T,
   |     ^ doesn't have a size known at compile-time
   |
-note: required by a bound in `std::ptr::read`
+note: required by an implicit `Sized` bound in `std::ptr::read`
  --> $RUST/core/src/ptr/mod.rs
   |
   | pub const unsafe fn read<T>(src: *const T) -> T {
-  |                          ^ required by this bound in `read`
+  |                          ^ required by the implicit `Sized` requirement on this type parameter in `read`
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
 6    - struct Struct<T: ?Sized> {
diff --git a/tests/ui/pin_project/project_replace_unsized_fn_params.stderr b/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
index eb88ace9..54531590 100644
--- a/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
+++ b/tests/ui/pin_project/project_replace_unsized_fn_params.stderr
@@ -57,11 +57,11 @@ error[E0277]: the size for values of type `T` cannot be known at compilation tim
 9 |     f: T,
   |     ^ doesn't have a size known at compile-time
   |
-note: required by a bound in `std::ptr::read`
+note: required by an implicit `Sized` bound in `std::ptr::read`
  --> $RUST/core/src/ptr/mod.rs
   |
   | pub const unsafe fn read<T>(src: *const T) -> T {
-  |                          ^ required by this bound in `read`
+  |                          ^ required by the implicit `Sized` requirement on this type parameter in `read`
 help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
 8    - struct Struct<T: ?Sized> {