diff --git a/08.md b/08.md
index a9412013..289ec631 100644
--- a/08.md
+++ b/08.md
@@ -1,6 +1,6 @@
 # NIP-08
 
-> __Warning__  `unrecommended`: deprecated in favor of NIP-27
+> __Warning__  `unrecommended`: deprecated in favor of [NIP-27](27.md)
 
 ## Handling Mentions
 
diff --git a/21.md b/21.md
index 1b46f3e1..d2fab480 100644
--- a/21.md
+++ b/21.md
@@ -8,7 +8,7 @@ This NIP standardizes the usage of a common URL scheme for maximum interoperabil
 
 The scheme is `nostr:`.
 
-The identifiers that come after are expected to be the same as those defined in NIP-19 (except `nsec`).
+The identifiers that come after are expected to be the same as those defined in [NIP-19](https://github.com/nostr-protocol/nips/blob/master/19.md) (except `nsec`).
 
 ## Examples