diff --git a/89.md b/89.md
index 83798e70..f9a9dd69 100644
--- a/89.md
+++ b/89.md
@@ -85,6 +85,8 @@ For example: an event with:
 
 where the `web` + `nevent` duple is duplicated with contradictory values is invalid and clients SHOULD ignore it.
 
+Applications that have different URLs should use different `kind:31990` to announce the different URLs that should be used per kind.
+
 A tag without a second value in the array SHOULD be considered a generic handler for any NIP-19 entity that is not handled by a different tag.
 
 # Client tag