diff --git a/src/cmd_u2fsign.rs b/src/cmd_u2fsign.rs
index e6073ac..ed49f3b 100644
--- a/src/cmd_u2fsign.rs
+++ b/src/cmd_u2fsign.rs
@@ -107,16 +107,14 @@ impl Command for CommandImpl {
             information!("Public key: {}", base64::encode(&public_key));
             information!("Signed message: {}", base64::encode(&msg));
 
-            let authorization = u2f::authorization::parse_sign_response(
+            let authorization_result = u2f::authorization::parse_sign_response(
                 app_id.to_string(),
                 client_data,
                 public_key,
                 sign_data,
             );
-            match authorization {
-                Ok(authorization) => success!("Parse authorization success, counter: {}", authorization.counter),
-                Err(e) => failure!("Parse authorization failed: {}", e),
-            }
+            let authorization = opt_result!(authorization_result, "Parse authorization failed: {}");
+            success!("Parse authorization success, counter: {}", authorization.counter);
         }
 
         Ok(None)