diff --git a/src/doc/trpl/generics.md b/src/doc/trpl/generics.md
index 74cb4530935dffb849f4a50411cf76358d0ee61f..3e4e0a66eae050a5ca25d169b394752d6fa92899 100644
--- a/src/doc/trpl/generics.md
+++ b/src/doc/trpl/generics.md
@@ -79,9 +79,9 @@ This type is generic over _two_ types: `T` and `E`. By the way, the capital lett
 can be any letter you'd like. We could define `Result<T, E>` as:
 
 ```{rust}
-enum Result<H, N> {
-    Ok(H),
-    Err(N),
+enum Result<A, Z> {
+    Ok(A),
+    Err(Z),
 }
 ```