diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index 0b9fc250636..b555c966d2d 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -212,7 +212,7 @@ macro_rules! unimplemented(
     () => (fail!("not yet implemented"))
 )
 
-/// Use the syntax described in `std::fmt` to create a value of type `~str`.
+/// Use the syntax described in `std::fmt` to create a value of type `String`.
 /// See `std::fmt` for more information.
 ///
 /// # Example