diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index e35f3e52aa0be..417a106b99a2e 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -2249,9 +2249,11 @@ impl<T> [T] {
     /// assert!(match r { Ok(1..=4) => true, _ => false, });
     /// ```
     // Lint rustdoc::broken_intra_doc_links is allowed as `slice::sort_by_key` is
-    // in crate `alloc`, and as such doesn't exists yet when building `core`
-    // links to downstream crate: https://github.com/rust-lang/rust/issues/74481
+    // in crate `alloc`, and as such doesn't exists yet when building `core`.
+    // links to downstream crate: #74481. Since primitives are only documented in
+    // libstd (#73423), this never leads to broken links in practice.
     #[cfg_attr(not(bootstrap), allow(rustdoc::broken_intra_doc_links))]
+    #[cfg_attr(bootstrap, allow(broken_intra_doc_links))]
     #[stable(feature = "slice_binary_search_by_key", since = "1.10.0")]
     #[inline]
     pub fn binary_search_by_key<'a, B, F>(&'a self, b: &B, mut f: F) -> Result<usize, usize>