diff --git a/http-signature-normalization-actix/examples/client.rs b/http-signature-normalization-actix/examples/client.rs
index 3e4dd0b..c90429f 100644
--- a/http-signature-normalization-actix/examples/client.rs
+++ b/http-signature-normalization-actix/examples/client.rs
@@ -14,12 +14,12 @@ fn main() {
             Client::default()
                 .post("http://127.0.0.1:8010/")
                 .header("User-Agent", "Actix Web")
-                .authorization_signature_with_digest::<_, MyError, _, _, _>(
+                .authorization_signature_with_digest(
                     &config,
                     "my-key-id",
                     &mut digest,
                     "Hewwo-owo",
-                    |s| Ok(base64::encode(s)),
+                    |s| Ok(base64::encode(s)) as Result<_, MyError>,
                 )
                 .unwrap()
                 .send()