diff --git a/bip-0013.mediawiki b/bip-0013.mediawiki
index c5a4354d..70be90d3 100644
--- a/bip-0013.mediawiki
+++ b/bip-0013.mediawiki
@@ -50,7 +50,7 @@ This proposal is not backwards compatible, but it fails gracefully-- if an older
 
 ==Reference Implementation==
 
-See base58.cpp1/base58.h at https://github.com/bitcoin/bitcoin/tree/master/src
+See base58.cpp/base58.h at https://github.com/bitcoin/bitcoin/tree/master/src
 
 ==See Also==