From 0ce781b37c2771ef89bdf607d40126ac368b4f5c Mon Sep 17 00:00:00 2001
From: Rapptz <rapptz@gmail.com>
Date: Sat, 22 Apr 2017 04:44:21 -0400
Subject: [PATCH] Fix NameError in GuildChannel.changed_roles

---
 discord/abc.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/discord/abc.py b/discord/abc.py
index 863d6d765..a4cdae5a6 100644
--- a/discord/abc.py
+++ b/discord/abc.py
@@ -25,6 +25,7 @@ DEALINGS IN THE SOFTWARE.
 """
 
 import abc
+import copy
 import asyncio
 
 from collections import namedtuple