diff --git a/nucypher/characters/control/interfaces.py b/nucypher/characters/control/interfaces.py
index 828a7c806..dd0182f56 100644
--- a/nucypher/characters/control/interfaces.py
+++ b/nucypher/characters/control/interfaces.py
@@ -188,7 +188,8 @@ class BobInterface(CharacterPublicInterface):
                  label: bytes,
                  policy_encrypting_key: bytes,
                  alice_verifying_key: bytes,
-                 message_kit: bytes):
+                 message_kit: bytes,
+                 treasure_map: bytes = None):
         """
         Character control endpoint for re-encrypting and decrypting policy data.
         """