diff --git a/bip-0122.mediawiki b/bip-0122.mediawiki
index d0258738..d59e3537 100644
--- a/bip-0122.mediawiki
+++ b/bip-0122.mediawiki
@@ -56,8 +56,8 @@ Where:
 
 <pre>
 blockchainuri = "blockchain:" ["//" chain] "/" object
-object = ("tx" "/" hash ) / ( "block" "/" (hash / blockheight ) ) /
-         ( "address" "/" address )
+object = ("tx" "/" hash) / ("block" "/" (hash / blockheight)) /
+         ("address" "/" address)
 chain = hash
 hash = 64HEXDIG
 blockheight = 1*15DIGIT ; 15 is somehow arbitrary, i.e. a "small" int.
@@ -121,4 +121,4 @@ Thanks to Richard Moore, Matt Whitlock, Andreas Schildbach for suggestions about
 
 ==Copyright==
 
-This document is placed in the public domain.
\ No newline at end of file
+This document is placed in the public domain.