diff --git a/docs/src/main/tut/monad.md b/docs/src/main/tut/monad.md
index d9e5a5c950..b8607826f6 100644
--- a/docs/src/main/tut/monad.md
+++ b/docs/src/main/tut/monad.md
@@ -113,3 +113,4 @@ implicit def optionTMonad[F[_]](implicit F : Monad[F]) = {
 
 This sort of construction is called a monad transformer.
 
+Cats has an [`OptionT`](optiont.html) monad transformer, which adds a lot of useful functions to the simple implementation above.
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