diff --git a/src/2025h2/evolving-traits.md b/src/2025h2/evolving-traits.md
index c19bfac0..80697951 100644
--- a/src/2025h2/evolving-traits.md
+++ b/src/2025h2/evolving-traits.md
@@ -212,7 +212,7 @@ impl Subtrait for MyType {
 trait Supertrait {
     fn supertrait_item();
 }
-trait Subtrait: Supertrait {
+trait Subtrait: auto Supertrait {
     fn subtrait_item();
 }
 // User code is unchanged from above, no separate `Supertrait`