diff --git a/tokio/src/macros/pin.rs b/tokio/src/macros/pin.rs
index a32187e5a..7af9ce7d1 100644
--- a/tokio/src/macros/pin.rs
+++ b/tokio/src/macros/pin.rs
@@ -44,7 +44,7 @@
 /// Stream + Unpin`.
 ///
 /// [`Future`]: trait@std::future::Future
-/// [`Box::pin`]: #
+/// [`Box::pin`]: std::boxed::Box::pin
 ///
 /// # Usage
 ///