diff --git a/ch07_authorization-authentication.adoc b/ch07_authorization-authentication.adoc
index 1d1bb601..7cfb959d 100644
--- a/ch07_authorization-authentication.adoc
+++ b/ch07_authorization-authentication.adoc
@@ -1431,7 +1431,7 @@ the legacy input script field:
 
 ===== Differentiating between P2WPKH and P2WSH
 
-In the previous two sections, we demonstrated two types of witness
+In the((("P2WPKH (pay to witness public key hash)")))((("output scripts", "P2WPKH (pay to witness public key hash)"))) previous two sections, we demonstrated two types of witness
 programs: <<p2wpkh>> and <<p2wsh>>. Both types of witness programs
 consist of the same version number followed by a data push. They
 look very similar, but are interpreted very differently: one is