diff --git a/ch09_fees.adoc b/ch09_fees.adoc
index eb6fc397..8036acff 100644
--- a/ch09_fees.adoc
+++ b/ch09_fees.adoc
@@ -195,7 +195,7 @@ bumping in Bitcoin, replace by fee (RBF) and child pays for parent
 
 To((("transaction fees", "fee bumping", "RBF (replace by fee)", id="transaction-fees-bump-rbf")))((("fee bumping", "RBF (replace by fee)", id="fee-bump-rbf")))((("RBF (replace by fee) fee bumping", id="rbf"))) increase the fee of a transaction using RBF fee bumping, you create
 a conflicting version of the transaction that pays a higher fee.  Two
-or more transactions are considered to be _conflicting transactions_ if
+or more transactions are considered((("conflicting transactions")))((("transactions", "conflicts in"))) to be _conflicting transactions_ if
 only one of them can be included in a valid blockchain, forcing a miner
 to choose only one of them.  Conflicts occur when two or more transactions
 each try to spend one of the same UTXOs, i.e., they each include an input