diff --git a/russh-keys/src/agent/client.rs b/russh-keys/src/agent/client.rs
index a1f4cba3..146906e8 100644
--- a/russh-keys/src/agent/client.rs
+++ b/russh-keys/src/agent/client.rs
@@ -320,6 +320,7 @@ impl<S: AsyncRead + AsyncWrite + Unpin> AgentClient<S> {
         key_blob(public, &mut self.buf)?;
         self.buf.extend_ssh_string(data);
         debug!("public = {:?}", public);
+        #[allow(unreachable_patterns)] // may not be unreachable depending on build flags
         let hash = match public {
             #[cfg(feature = "openssl")]
             PublicKey::RSA { hash, .. } => match hash {
diff --git a/russh-keys/src/lib.rs b/russh-keys/src/lib.rs
index e3c09ae6..fcbe5475 100644
--- a/russh-keys/src/lib.rs
+++ b/russh-keys/src/lib.rs
@@ -856,6 +856,7 @@ Cog3JMeTrb3LiPHgN6gU2P30MRp6L1j1J/MtlOAr5rux
             let (_, buf) = client.sign_request(&public, buf).await;
             let _buf = buf?;
             #[cfg(feature = "rs-crypto")]
+            #[allow(irrefutable_let_patterns)]
             {
                 let (a, b) = _buf.split_at(_len);
                 if let key::KeyPair::Ed25519 { .. } = key {
diff --git a/russh/examples/echoserver.rs b/russh/examples/echoserver.rs
index ec419155..dd4311c5 100644
--- a/russh/examples/echoserver.rs
+++ b/russh/examples/echoserver.rs
@@ -18,9 +18,16 @@ async fn main() {
     let mut config = russh::server::Config::default();
     config.connection_timeout = Some(std::time::Duration::from_secs(3600));
     config.auth_rejection_time = std::time::Duration::from_secs(3);
+
+    // Depending on whether you use OpenSSL or not, you can generate different keys:
+    #[cfg(feature = "openssl")]
+    let keypair = russh_keys::key::KeyPair::generate_rsa(2048, key::SignatureHash::SHA1).unwrap();
+    #[cfg(not(feature = "openssl"))]
+    let keypair = russh_keys::key::KeyPair::generate_ed25519().unwrap();
+
     config
         .keys
-        .push(russh_keys::key::KeyPair::generate_rsa(2048, key::SignatureHash::SHA1).unwrap());
+        .push(keypair);
     let config = Arc::new(config);
     let sh = Server {
         clients: Arc::new(Mutex::new(HashMap::new())),