diff --git a/pkcs11_cryptography_keys/sessions/PKCS11_admin_session.py b/pkcs11_cryptography_keys/sessions/PKCS11_admin_session.py
index 520e0e8..faa7da0 100644
--- a/pkcs11_cryptography_keys/sessions/PKCS11_admin_session.py
+++ b/pkcs11_cryptography_keys/sessions/PKCS11_admin_session.py
@@ -97,7 +97,7 @@ def open(self) -> PKCS11TokenAdmin | None:
                             keyid = self._key_id
                     if label is None:
                         if self._key_label is None:
-                            label = b"default"
+                            label = "default"
                         else:
                             label = self._key_label
                     return PKCS11TokenAdmin(self._session, keyid, label)