diff --git a/library/monad/free.lisp b/library/monad/free.lisp
index 8b87a665..564eaada 100644
--- a/library/monad/free.lisp
+++ b/library/monad/free.lisp
@@ -26,7 +26,7 @@
   (define-type (Free :f :a)
     "`Free :f` gives you a Monad instance for any `Functor :f`.
 
-Refernces: [here](https://serokell.io/blog/introduction-to-free-monads) and [here](https://www.tweag.io/blog/2018-02-05-free-monads/)"    
+References: [here](https://serokell.io/blog/introduction-to-free-monads) and [here](https://www.tweag.io/blog/2018-02-05-free-monads/)"    
     (Free (:f (Free :f :a)))
     (Val :a))