diff --git a/21.md b/21.md
index 843112e..05eca24 100644
--- a/21.md
+++ b/21.md
@@ -23,9 +23,9 @@ The identifiers that come after are expected to be the same as those defined in
 
 Nostr apps SHOULD register for the specific event types they support, enabling operating systems to suggest only applications that can handle those event types and allowing the OS to have a different default application for each type.
 
-The typed scheme is `nostr<event type number>:` followed by a `note`, `nevent` or an `naddr` [NIP-19](19.md) identifier.
+The typed scheme is `nostr+<event type number>:` followed by a `note`, `nevent` or an `naddr` [NIP-19](19.md) identifier.
 
 ## Examples
 
-- `nostr1:note1fntxtkcy9pjwucqwa9mddn7v03wwwsu9j330jj350nvhpky2tuaspk6nqc`
-- `nostr1:nevent1qqstna2yrezu5wghjvswqqculvvwxsrcvu7uc0f78gan4xqhvz49d9spr3mhxue69uhkummnw3ez6un9d3shjtn4de6x2argwghx6egpr4mhxue69uhkummnw3ez6ur4vgh8wetvd3hhyer9wghxuet5nxnepm`
+- `nostr+1:note1fntxtkcy9pjwucqwa9mddn7v03wwwsu9j330jj350nvhpky2tuaspk6nqc`
+- `nostr+1:nevent1qqstna2yrezu5wghjvswqqculvvwxsrcvu7uc0f78gan4xqhvz49d9spr3mhxue69uhkummnw3ez6un9d3shjtn4de6x2argwghx6egpr4mhxue69uhkummnw3ez6ur4vgh8wetvd3hhyer9wghxuet5nxnepm`