diff --git a/cryptoservice/crypto_service.go b/cryptoservice/crypto_service.go
index d473564da4..f5bfa073b0 100644
--- a/cryptoservice/crypto_service.go
+++ b/cryptoservice/crypto_service.go
@@ -73,9 +73,9 @@ func (cs *CryptoService) Create(role, algorithm string) (data.PublicKey, error)
 
 }
 
-// GetPrivateKey returns a private key by ID. It tries to get the key first
-// without a GUN (in which case it's a root key).  If that fails, try to get
-// the key with the GUN (non-root key).
+// GetPrivateKey returns a private key and role if present by ID.
+// It tries to get the key first without a GUN (in which case it's a root key).
+// If that fails, try to get the key with the GUN (non-root key).
 // If that fails, then we don't have the key.
 func (cs *CryptoService) GetPrivateKey(keyID string) (k data.PrivateKey, role string, err error) {
 	keyPaths := []string{keyID, filepath.Join(cs.gun, keyID)}
diff --git a/tuf/signed/ed25519.go b/tuf/signed/ed25519.go
index 3f7ad1ed28..e09b550501 100644
--- a/tuf/signed/ed25519.go
+++ b/tuf/signed/ed25519.go
@@ -95,7 +95,7 @@ func (e *Ed25519) GetKey(keyID string) data.PublicKey {
 	return data.PublicKeyFromPrivate(e.keys[keyID].privKey)
 }
 
-// GetPrivateKey returns a single private key based on the ID
+// GetPrivateKey returns a single private key and role if present, based on the ID
 func (e *Ed25519) GetPrivateKey(keyID string) (data.PrivateKey, string, error) {
 	if k, ok := e.keys[keyID]; ok {
 		return k.privKey, k.role, nil