diff --git a/22.md b/22.md
index 905e0b43..2ad1fd81 100644
--- a/22.md
+++ b/22.md
@@ -56,6 +56,8 @@ Their uppercase versions use the same type of values but relate to the root item
 
 `p` tags SHOULD be used when mentioning pubkeys in the `.content` with [NIP-21](21.md).
 
+Comments MUST NOT be used to reply to kind 1 notes. [NIP-10](10.md) should instead be followed.
+
 ## Examples
 
 A comment on a blog post looks like this: