From 91ce42ce9c47395f979c7fd72a6fa2b6da1f3ac7 Mon Sep 17 00:00:00 2001
From: Brad Warren <bmw@users.noreply.github.com>
Date: Thu, 16 Jan 2020 13:44:08 -0800
Subject: [PATCH] Do not list the name twice. (#7689)

---
 acme/acme/messages.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acme/acme/messages.py b/acme/acme/messages.py
index c824c43cf..1d907e5fc 100644
--- a/acme/acme/messages.py
+++ b/acme/acme/messages.py
@@ -245,7 +245,7 @@ class Directory(jose.JSONDeSerializable):
         try:
             return self[name.replace('_', '-')]
         except KeyError as error:
-            raise AttributeError(str(error) + ': ' + name)
+            raise AttributeError(str(error))
 
     def __getitem__(self, name):
         try: