diff --git a/ch08_signatures.adoc b/ch08_signatures.adoc
index f3075117..91498c10 100644
--- a/ch08_signatures.adoc
+++ b/ch08_signatures.adoc
@@ -972,7 +972,7 @@ ensure you generate a different _k_ for each ((("digital signatures", "randomnes
 
 === Segregated Witness's New Signing Algorithm
 
-Signatures in Bitcoin transactions are applied on a _commitment hash_,
+Signatures in((("digital signatures", "segregated witness and")))((("segregated witness (segwit)", "digital signatures and")))((("commitment hash", "digital signatures and"))) Bitcoin transactions are applied on a _commitment hash_,
 which is calculated from the transaction data, locking specific parts of
 the data indicating the signer's commitment to those values. For
 example, in a simple +SIGHASH_ALL+ type signature, the commitment hash