diff --git a/letsencrypt/client/recovery_token_challenge.py b/letsencrypt/client/recovery_token_challenge.py
index 4b1206541..06eeb0283 100644
--- a/letsencrypt/client/recovery_token_challenge.py
+++ b/letsencrypt/client/recovery_token_challenge.py
@@ -5,12 +5,13 @@ from letsencrypt.client import challenge
 
 class RecoveryToken(challenge.Challenge):
 
-    def __init__(self):
+    def __init__(self, configurator):
+        super(RecoveryToken, self).__init__(configurator)
         self.token = ""
 
-    def perform(self, quiet = True):
-
-        cancel, self.token  = dialog.generic_input("Please Input Recovery Token: ")
+    def perform(self, quiet=True):
+        cancel, self.token = dialog.generic_input(
+            "Please Input Recovery Token: ")
         if cancel == 1:
             return False
 
@@ -20,4 +21,4 @@ class RecoveryToken(challenge.Challenge):
         pass
 
     def generate_response(self):
-        return {"type":"recoveryToken", "token":self.token}
+        return {"type": "recoveryToken", "token": self.token}