diff --git a/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs b/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
index 7a14901b32d9..5597fe488c1a 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
@@ -294,7 +294,8 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
             if is_shadowed {
                 diag.note(format!(
                     "the associated type `{}` is defined as `{}` in the implementation, \
-                    but the generic bound `{}` hides this definition",
+                    but the where-bound `{}` shadows this definition\n\
+                    see issue #152409 <https://github.com/rust-lang/rust/issues/152409> for more information",
                     self.ty_to_string(tcx.mk_ty_from_kind(ty::Alias(ty::Projection, *alias))),
                     self.ty_to_string(concrete),
                     self.ty_to_string(alias.self_ty())
diff --git a/tests/ui/associated-types/param-env-shadowing-issue-149910.stderr b/tests/ui/associated-types/param-env-shadowing-issue-149910.stderr
index fb05f0add349..b06770e52635 100644
--- a/tests/ui/associated-types/param-env-shadowing-issue-149910.stderr
+++ b/tests/ui/associated-types/param-env-shadowing-issue-149910.stderr
@@ -10,7 +10,8 @@ LL |     x
    |
    = note: expected associated type `<T as Trait>::Assoc`
                found type parameter `T`
-   = note: the associated type `<T as Trait>::Assoc` is defined as `T` in the implementation, but the generic bound `T` hides this definition
+   = note: the associated type `<T as Trait>::Assoc` is defined as `T` in the implementation, but the where-bound `T` shadows this definition
+           see issue #152409 <https://github.com/rust-lang/rust/issues/152409> for more information
 help: consider further restricting this bound
    |
 LL | fn foo<T: Trait<Assoc = T>>(x: T) -> T::Assoc {