diff --git a/ch06_transactions.adoc b/ch06_transactions.adoc
index 15f26ac7..546336b3 100644
--- a/ch06_transactions.adoc
+++ b/ch06_transactions.adoc
@@ -116,7 +116,7 @@ can be added to the blockchain later when you do broadcast it.  In the
 interim, you may even lose access to the private key (or keys) necessary
 to sign an alternative transaction spending the funds.  This isn't
 hypothetical: several protocols built on Bitcoin, including Lightning
-Network, depend on presigned transactions.
+Network, depend on presigned [.keep-together]#transactions.#
 
 This creates a challenge for protocol developers when they assist users
 in upgrading the Bitcoin consensus protocol.  Adding new