diff --git a/ch06.asciidoc b/ch06.asciidoc
index fc70c078..c80970ee 100644
--- a/ch06.asciidoc
+++ b/ch06.asciidoc
@@ -227,7 +227,7 @@ To fully understand Alice's transaction we had to retrieve the previous transact
 
 ===== Transaction serialization—inputs
 
-((("serialization", "inputs")))When transactions are serialized for transmission on the network, their inputs are encoded into a byte-stream as shown in <<tx_in_structure>>.
+((("serialization", "inputs")))((("transactions", "outputs and inputs", "input serialization")))((("outputs and inputs", "input serialization")))When transactions are serialized for transmission on the network, their inputs are encoded into a byte-stream as shown in <<tx_in_structure>>.
 
 [[tx_in_structure]]
 .Transaction input serialization