diff --git a/src/lib.rs b/src/lib.rs
index a56122a..45d062e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -52,7 +52,7 @@ pub fn http_response(_attr: TokenStream, item: TokenStream) -> TokenStream {
                     Self: Sized + Send,
                 {
                     async fn receive(mut resp: actix_web::ClientResponse) -> Result<Self, Box<dyn std::error::Error>> {
-                        let body = resp.body().await?;
+                        let body = resp.body().await?; // Bytes, sized!
                         #(#variant_arms)*
                         Err(Box::new(std::io::Error::new(
                             std::io::ErrorKind::Other,