diff --git a/22.md b/22.md
index 2ad1fd81..8eff09a9 100644
--- a/22.md
+++ b/22.md
@@ -6,7 +6,7 @@ Comment
 
 `draft` `optional`
 
-A comment is a threading note always scoped to a root event or an `I`-tag.
+A comment is a threading note always scoped to a root event or an [`I`-tag](73.md).
 
 It uses `kind:1111` with plaintext `.content` (no HTML, Markdown, or other formatting).
 
@@ -198,4 +198,3 @@ A reply to a podcast comment:
   // other fields
 }
 ```
-