diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 96436bb253df..0bf7a55b6560 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -150,6 +150,7 @@
 #![feature(slice_ptr_get)]
 #![feature(no_niche)] // rust-lang/rust#68303
 #![feature(unsafe_block_in_unsafe_fn)]
+#![deny(intra_doc_link_resolution_failure)]
 #![deny(unsafe_op_in_unsafe_fn)]
 
 #[prelude_import]