diff --git a/src/librand/lib.rs b/src/librand/lib.rs
index ec510b4a5bd..2f76aa53f83 100644
--- a/src/librand/lib.rs
+++ b/src/librand/lib.rs
@@ -66,6 +66,7 @@ pub mod reseeding;
 mod rand_impls;
 
 /// A type that can be randomly generated using an `Rng`.
+#[doc(hidden)]
 pub trait Rand : Sized {
     /// Generates a random instance of this type using the specified source of
     /// randomness.