diff --git a/HW2.fedorind.hs b/HW2.fedorind.hs
index 1c0e0eb..65b37b5 100644
--- a/HW2.fedorind.hs
+++ b/HW2.fedorind.hs
@@ -95,4 +95,4 @@ neg = fold' (Lit . negate) Add (Mul . neg) -- Not efficient, but short :^)
 --   >>> eval (sub e2 e1)
 --   51
 --
-sub = fmap (. neg) Add -- (a -> b) is a Functor
+sub = (. neg) . Add -- (a -> b) is a Functor