diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index 9d0eb2e6b1cef..a08c3acc68aa2 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -231,10 +231,14 @@ macro_rules! eprintln {
 /// to give up ownership, you can instead borrow with `dbg!(&expr)`
 /// for some expression `expr`.
 ///
+/// The `dbg!` macro works exactly the same in release builds.
+/// This is useful when debugging issues that only occur in release
+/// builds or when debugging in release mode is significantly faster.
+///
 /// Note that the macro is intended as a debugging tool and therefore you
 /// should avoid having uses of it in version control for longer periods.
 /// Use cases involving debug output that should be added to version control
-/// may be better served by macros such as `debug!` from the `log` crate.
+/// are better served by macros such as [`debug!`] from the [`log`] crate.
 ///
 /// # Stability
 ///
@@ -306,6 +310,8 @@ macro_rules! eprintln {
 /// ```
 ///
 /// [stderr]: https://en.wikipedia.org/wiki/Standard_streams#Standard_error_(stderr)
+/// [`debug!`]: https://docs.rs/log/*/log/macro.debug.html
+/// [`log`]: https://crates.io/crates/log
 #[macro_export]
 #[stable(feature = "dbg_macro", since = "1.32.0")]
 macro_rules! dbg {