diff --git a/ch06_transactions.adoc b/ch06_transactions.adoc
index 46f27949..f792e7e2 100644
--- a/ch06_transactions.adoc
+++ b/ch06_transactions.adoc
@@ -315,6 +315,7 @@ pieces of information from it:
   relative timelocks (described in <<relative_timelocks>>) and outputs
   of coinbase transactions (described in <<coinbase_transactions>>).
 
+.fix_tracking { letter-spacing: -0.1pt; }
 - Proof that the previous output exists in the blockchain (or as a known
   unconfirmed transaction) and that no other transaction has spent it.
   One of Bitcoin's consensus rules forbids any output from being spent