diff --git a/nucypher/characters/control/specifications.py b/nucypher/characters/control/specifications.py
index a3d64d068..7b7f958fd 100644
--- a/nucypher/characters/control/specifications.py
+++ b/nucypher/characters/control/specifications.py
@@ -72,8 +72,8 @@ class AliceSpecification(CharacterSpecification):
                        'optional': ('value', 'first_period_reward', 'rate'),
                        'output': ('label', 'policy_encrypting_key')}
 
-    __derive_policy_encrypting_key = {'in': ('label', ),
-                                      'out': ('policy_encrypting_key', 'label')}
+    __derive_policy_encrypting_key = {'input': ('label', ),
+                                      'output': ('policy_encrypting_key', 'label')}
 
     __grant = {'input': ('bob_encrypting_key', 'bob_verifying_key', 'm', 'n', 'label', 'expiration'),
                'optional': ('value', 'first_period_reward', 'rate'),