diff --git a/disagreement/ext/commands/decorators.py b/disagreement/ext/commands/decorators.py
index 8fd14f7..53f540c 100644
--- a/disagreement/ext/commands/decorators.py
+++ b/disagreement/ext/commands/decorators.py
@@ -132,47 +132,7 @@ def _compute_permissions(
     member: "Member", channel: "Channel", guild: "Guild"
 ) -> "Permissions":
     """Compute the effective permissions for a member in a channel."""
-    from disagreement.models import Member, Guild, Channel
-    from disagreement.permissions import Permissions
-
-    if guild.owner_id == member.id:
-        return Permissions(~0)
-
-    roles = {str(r.id): r for r in guild.roles}
-    everyone_role = roles.get(str(guild.id))
-    if not everyone_role:
-        base_permissions = Permissions(0)
-    else:
-        base_permissions = Permissions(int(everyone_role.permissions))
-
-    for role_id in member.roles:
-        role = roles.get(str(role_id))
-        if role:
-            base_permissions |= Permissions(int(role.permissions))
-
-    if base_permissions & Permissions.ADMINISTRATOR:
-        return Permissions(~0)
-
-    overwrites = {
-        ow.id: ow for ow in getattr(channel, "permission_overwrites", [])
-    }
-    allow = Permissions(0)
-    deny = Permissions(0)
-
-    if everyone_overwrite := overwrites.get(str(guild.id)):
-        allow |= Permissions(int(everyone_overwrite.allow))
-        deny |= Permissions(int(everyone_overwrite.deny))
-
-    for role_id in member.roles:
-        if role_overwrite := overwrites.get(str(role_id)):
-            allow |= Permissions(int(role_overwrite.allow))
-            deny |= Permissions(int(role_overwrite.deny))
-
-    if member_overwrite := overwrites.get(str(member.id)):
-        allow |= Permissions(int(member_overwrite.allow))
-        deny |= Permissions(int(member_overwrite.deny))
-
-    return (base_permissions & ~deny) | allow
+    return channel.permissions_for(member)
 
 
 def requires_permissions(
diff --git a/tests/test_command_checks.py b/tests/test_command_checks.py
index 7c37407..6a6c8b2 100644
--- a/tests/test_command_checks.py
+++ b/tests/test_command_checks.py
@@ -56,8 +56,17 @@ async def test_cooldown_per_user(message):
     assert len(uses) == 2
 
 
+@pytest.mark.asyncio
 @pytest.mark.asyncio
 async def test_requires_permissions_pass(message):
+    class Guild:
+        id = "g"
+        owner_id = "owner"
+        roles = []
+
+        def get_member(self, mid):
+            return message.author
+
     class Channel:
         def __init__(self, perms):
             self.perms = perms
@@ -66,7 +75,9 @@ async def test_requires_permissions_pass(message):
         def permissions_for(self, member):
             return self.perms
 
+    message.author.roles = []
     message._client.get_channel = lambda cid: Channel(Permissions.SEND_MESSAGES)
+    message._client.get_guild = lambda gid: Guild()
 
     @requires_permissions(Permissions.SEND_MESSAGES)
     async def cb(ctx):
@@ -83,9 +94,17 @@ async def test_requires_permissions_pass(message):
 
     await cmd.invoke(ctx)
 
-
+@pytest.mark.asyncio
 @pytest.mark.asyncio
 async def test_requires_permissions_fail(message):
+    class Guild:
+        id = "g"
+        owner_id = "owner"
+        roles = []
+
+        def get_member(self, mid):
+            return message.author
+
     class Channel:
         def __init__(self, perms):
             self.perms = perms
@@ -94,7 +113,9 @@ async def test_requires_permissions_fail(message):
         def permissions_for(self, member):
             return self.perms
 
+    message.author.roles = []
     message._client.get_channel = lambda cid: Channel(Permissions.SEND_MESSAGES)
+    message._client.get_guild = lambda gid: Guild()
 
     @requires_permissions(Permissions.MANAGE_MESSAGES)
     async def cb(ctx):