diff --git a/disco/state.py b/disco/state.py
index 75531f7..689ab62 100644
--- a/disco/state.py
+++ b/disco/state.py
@@ -193,7 +193,12 @@ class State(object):
             event.guild.sync()
 
     def on_guild_update(self, event):
-        self.guilds[event.guild.id].update(event.guild)
+        self.guilds[event.guild.id].update(event.guild, ignored=[
+            'channels',
+            'members',
+            'voice_states',
+            'presences'
+        ])
 
     def on_guild_delete(self, event):
         if event.id in self.guilds:
diff --git a/disco/types/base.py b/disco/types/base.py
index 1d1341a..c3a061b 100644
--- a/disco/types/base.py
+++ b/disco/types/base.py
@@ -327,8 +327,11 @@ class Model(six.with_metaclass(ModelMeta, AsyncChainable)):
             value = field.try_convert(raw, self.client)
             setattr(inst, field.dst_name, value)
 
-    def update(self, other):
+    def update(self, other, ignored=None):
         for name in six.iterkeys(self._fields):
+            if ignored and name in ignored:
+                continue
+
             if hasattr(other, name) and not getattr(other, name) is UNSET:
                 setattr(self, name, getattr(other, name))
 
diff --git a/disco/types/channel.py b/disco/types/channel.py
index 4c91d3c..311ca5c 100644
--- a/disco/types/channel.py
+++ b/disco/types/channel.py
@@ -149,8 +149,8 @@ class Channel(SlottedModel, Permissible):
         if not self.guild_id:
             return Permissions.ADMINISTRATOR
 
-        member = self.guild.members.get(user.id)
-        base = self.guild.get_permissions(user)
+        member = self.guild.get_member(user)
+        base = self.guild.get_permissions(member)
 
         for ow in six.itervalues(self.overwrites):
             if ow.id != user.id and ow.id not in member.roles: