diff --git a/discord/abc.py b/discord/abc.py
index 57d3f4c21..f794cd99e 100644
--- a/discord/abc.py
+++ b/discord/abc.py
@@ -704,6 +704,10 @@ class GuildChannel:
 
         You must have the :attr:`~discord.Permissions.manage_roles` permission to use this.
 
+        .. note::
+
+            This method *replaces* the old overwrites with the ones given.
+
         Examples
         ----------