diff --git a/ch05_wallets.adoc b/ch05_wallets.adoc
index edafc24e..b30c3150 100644
--- a/ch05_wallets.adoc
+++ b/ch05_wallets.adoc
@@ -269,7 +269,7 @@ Even if you use a type of recovery code that was designed for easy
 memorization, we very strongly encourage you to consider writing it down.
 ====
 
-Several different types of recovery codes are in wide use as of this
+Several ((("wallets", "recovery codes", "types of", id="wallet-recovery-type")))((("recovery codes", "types of", id="recovery-code-type")))different types of recovery codes are in wide use as of this
 writing:
 
 BIP39::
@@ -341,7 +341,7 @@ instantly using software on a digital device.  You can create up to 31
 recovery codes to be stored in different places, specifying how many of
 them will be required in order to recover the seed.  As a new proposal,
 details about Codex32 may change significantly before this book is
-published, so we encourage any readers interested in distributed
+published, so we encourage ((("wallets", "recovery codes", "types of", startref="wallet-recovery-type")))((("recovery codes", "types of", startref="recovery-code-type")))any readers interested in distributed
 recovery codes to investigate its https://oreil.ly/Xx_Zq[current
 status].
 ====