diff --git a/bip-0087.mediawiki b/bip-0087.mediawiki
index 57d5efeb..d270027e 100644
--- a/bip-0087.mediawiki
+++ b/bip-0087.mediawiki
@@ -76,7 +76,7 @@ Each level has a special meaning, described in the chapters below.
 
 ===Purpose===
 
-Purpose is a constant set to 87' following the BIP43 recommendation.
+Purpose is a constant set to <code>87'</code> following the BIP43 recommendation.
 It indicates that the subtree of this node is used according to this specification.
 
 Hardened derivation is used at this level.