diff --git a/62.md b/62.md
index 556b8de0..bc94f0d2 100644
--- a/62.md
+++ b/62.md
@@ -40,7 +40,8 @@ An event of  kind `32000` SHALL serve to authenticate an unversioned object host
 
 An event of kind `32001` SHALL serve to authenticate a versioned object hosted by a third-party service (i.e., not a Nostr client or relay).  Events of this kind MUST implement the specification for kind `32000`, along with the following rules:
 
-- The `a` tag MUST reference the kind `32000` or `32001` event that represents the immediately previous version of the object.
+- An `a` tag MUST reference the kind `32000` or `32001` event that represents the immediately previous version of the object.
+- An `a` tag MUST reference the kind `32000` event that represents the initial version of the object.
 - The `d` tag MUST use as an identifier a hash of the versioned object, so that each version is uniquely identified.
 - The `hash` tag MUST be included to specify the hash method used to produce the object's unique identifier.
 - The initial version of an object SHOULD be represented by a kind `32000` event, and all subsequent versions MUST by represented by events of kind `32001`.