diff --git a/disco/types/channel.py b/disco/types/channel.py
index 0ef5f7a..3e84a9e 100644
--- a/disco/types/channel.py
+++ b/disco/types/channel.py
@@ -168,16 +168,11 @@ class Channel(SlottedModel, Permissible):
             base -= everyone.deny
             base += everyone.allow
 
-        denies = 0
-        allows = 0
         for role_id in member.roles:
             overwrite = self.overwrites.get(role_id)
             if overwrite:
-                denies |= overwrite.deny
-                allows |= overwrite.allow
-
-        base -= denies
-        base += allows
+                base -= overwrite.deny
+                base += overwrite.allow
 
         ow_member = self.overwrites.get(member.user.id)
         if ow_member:
diff --git a/disco/types/permissions.py b/disco/types/permissions.py
index 6157bd9..d11b08f 100644
--- a/disco/types/permissions.py
+++ b/disco/types/permissions.py
@@ -66,7 +66,7 @@ class PermissionValue(object):
         if isinstance(other, PermissionValue):
             self.value &= ~other.value
         elif isinstance(other, int):
-            self.value &= other
+            self.value &= ~other
         elif isinstance(other, EnumAttr):
             setattr(self, other.name, False)
         else: