diff --git a/did_peer/src/peer_did/numalgos/numalgo2.rs b/did_peer/src/peer_did/numalgos/numalgo2.rs
index 55a28a1a12..64f9c6259a 100644
--- a/did_peer/src/peer_did/numalgos/numalgo2.rs
+++ b/did_peer/src/peer_did/numalgos/numalgo2.rs
@@ -32,7 +32,7 @@ impl ResolvableNumalgo for Numalgo2 {
 }
 
 impl ToNumalgo3 for Numalgo2 {
-    fn to_numalgo3(&self, did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError> {
+    fn to_numalgo3(did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError> {
         generate_numalgo3(did)
     }
 }
diff --git a/did_peer/src/peer_did/numalgos/numalgo3.rs b/did_peer/src/peer_did/numalgos/numalgo3.rs
index a9d3f53671..a0798862b4 100644
--- a/did_peer/src/peer_did/numalgos/numalgo3.rs
+++ b/did_peer/src/peer_did/numalgos/numalgo3.rs
@@ -12,7 +12,7 @@ impl Numalgo for Numalgo3 {
 }
 
 impl ToNumalgo3 for Numalgo3 {
-    fn to_numalgo3(&self, did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError> {
+    fn to_numalgo3(did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError> {
         Ok(PeerDid::from_parts(did.to_owned(), Self::default()))
     }
 }
diff --git a/did_peer/src/peer_did/numalgos/traits.rs b/did_peer/src/peer_did/numalgos/traits.rs
index 857169822c..80d22e0db7 100644
--- a/did_peer/src/peer_did/numalgos/traits.rs
+++ b/did_peer/src/peer_did/numalgos/traits.rs
@@ -46,5 +46,5 @@ pub trait ResolvableNumalgo: Numalgo {
 }
 
 pub trait ToNumalgo3: Numalgo {
-    fn to_numalgo3(&self, did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError>;
+    fn to_numalgo3(did: &Did) -> Result<PeerDid<Numalgo3>, DidPeerError>;
 }
diff --git a/did_peer/src/peer_did/peer_did/mod.rs b/did_peer/src/peer_did/peer_did/mod.rs
index a82d03d127..b6f6467a5f 100644
--- a/did_peer/src/peer_did/peer_did/mod.rs
+++ b/did_peer/src/peer_did/peer_did/mod.rs
@@ -41,7 +41,7 @@ impl<N: Numalgo> PeerDid<N> {
 
 impl<N: ToNumalgo3> PeerDid<N> {
     pub fn to_numalgo3(&self) -> Result<PeerDid<Numalgo3>, DidPeerError> {
-        self.numalgo.to_numalgo3(self.did())
+        N::to_numalgo3(self.did())
     }
 }