diff --git a/58.md b/58.md
index 71e7e86c..344f6a41 100644
--- a/58.md
+++ b/58.md
@@ -37,7 +37,7 @@ Users MAY choose to decorate their profiles with badges for fame, notoriety, rec
 
 ### Recommendations
 
-Badge issuers MAY include some Proof of Work as per [NIP-13](03.md) when minting badges to embed them with an energy cost, arguably making them more special and valuable for users that wish to collect them.
+Badge issuers MAY include some Proof of Work as per [NIP-13](13.md) when minting badges to embed them with an energy cost, arguably making them more special and valuable for users that wish to collect them.
 
 Clients MAY whitelist badge issuers (pubkeys) for the purpose of ensuring they retain a valuable/special factor for their users.