diff --git a/23.md b/23.md
index 5bf20cdb..151a31b5 100644
--- a/23.md
+++ b/23.md
@@ -31,7 +31,7 @@ These articles are meant to be editable, so they should make use of the replacea
 
 ### Linking
 
-The article may be linked to using the NIP-19 `naddr` code along with the `"a"` tag (see [NIP-33](33md) and [NIP-19](19.md)).
+The article may be linked to using the NIP-19 `naddr` code along with the `"a"` tag (see [NIP-33](33.md) and [NIP-19](19.md)).
 
 ### References