diff --git a/src/ch04/s02-lifetimes.md b/src/ch04/s02-lifetimes.md
index 8b97d27..2253430 100644
--- a/src/ch04/s02-lifetimes.md
+++ b/src/ch04/s02-lifetimes.md
@@ -2,13 +2,13 @@
 
 Current:
 ```rust
-pub trait WeakFunctorA<'a>: 'a {
-    type F<A: 'a>: 'a;
-}
-
-pub trait WeakFunctor {
+pub trait WeakFunctorAny {
     type F<'a, A: 'a>: 'a
     where
         Self: 'a;
 }
+
+pub trait WeakFunctor<'a>: 'a {
+    type F<A: 'a>: 'a;
+}
 ```