diff --git a/ch05_wallets.adoc b/ch05_wallets.adoc
index ff2d5261..0b120193 100644
--- a/ch05_wallets.adoc
+++ b/ch05_wallets.adoc
@@ -199,7 +199,7 @@ single sequence, as described in the((("wallets", "key generation", "public chil
 [[hd_wallets]]
 ==== Hierarchical Deterministic (HD) Key Generation (BIP32)
 
-Every ((("wallets", "key generation", "HD (hierarchical deterministic)")))((("key generation", "HD (hierarchical deterministic)")))((("HD (hierarchical deterministic) key generation")))((("BIP32 HD (hierarchical deterministic) key generation")))modern Bitcoin wallet of which we're aware uses hierarchical
+Every ((("wallets", "key generation", "HD (hierarchical deterministic)")))((("key generation", "HD (hierarchical deterministic)")))((("HD (hierarchical deterministic) key generation")))((("BIP32 HD (hierarchical deterministic) key generation", primary-sortas="BIP032")))modern Bitcoin wallet of which we're aware uses hierarchical
 deterministic (HD) key generation by default.  This standard, defined in
 BIP32, uses deterministic key generation and optional public child key
 derivation with an algorithm that produces a tree of keys.