diff --git a/bip-0021.mediawiki b/bip-0021.mediawiki
index 0fba9bcf9..cdc37baae 100644
--- a/bip-0021.mediawiki
+++ b/bip-0021.mediawiki
@@ -37,7 +37,7 @@ Elements of the query component may contain characters outside the valid range.
 
 === ABNF grammar ===
 
-(See also [[#Simpler syntax|a simpler representation of syntax]])
+(See also [[#simpler-syntax|a simpler representation of syntax]])
 
  bitcoinurn     = "bitcoin:" bitcoinaddress [ "?" bitcoinparams ]
  bitcoinaddress = *base58