diff --git a/verifier/src/lib.rs b/verifier/src/lib.rs
index 2c1da40..0c6a130 100644
--- a/verifier/src/lib.rs
+++ b/verifier/src/lib.rs
@@ -232,11 +232,11 @@ impl PkiPathSignatureVerifier {
 pub fn verify_signature(
     alias: &Certificate,
     hash: &[u8],
-    signature: &[u8; 64],
+    signature: &[u8],
 ) -> Result<()> {
     use ed25519_dalek::{Signature, Verifier, VerifyingKey};
 
-    let signature = Signature::from_bytes(signature);
+    let signature = Signature::from_slice(signature)?;
 
     let alias = alias
         .tbs_certificate