diff --git a/src/lib.rs b/src/lib.rs
index b4f87e1..d5256cc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -79,10 +79,11 @@ mod tests {
         for _ in 0..4096 {
             rng.fill_bytes(&mut privkey);
             let zengo_keypair = KeyPair::create_from_private_key(privkey);
-            let dalek_secret = ed25519_dalek::SecretKey::try_from(privkey)
+            let dalek_secret: [u8; 32] = ed25519_dalek::SecretKey::try_into(privkey)
                 .expect("Can only fail if bytes.len()<32");
-            let dalek_pub = ed25519_dalek::VerifyingKey::from_bytes(&privkey).unwrap();
-            assert_eq!(zengo_keypair.pubkey(), dalek_pub.to_bytes());
+            let dalek_pub = ed25519_dalek::SigningKey::from_bytes(&dalek_secret);
+
+            assert_eq!(zengo_keypair.pubkey(), dalek_pub.verifying_key().to_bytes());
         }
     }