diff --git a/ch04_keys.adoc b/ch04_keys.adoc
index afc4c5fe..29bd6320 100644
--- a/ch04_keys.adoc
+++ b/ch04_keys.adoc
@@ -70,6 +70,7 @@ From the private key, we
 use elliptic curve multiplication, a one-way cryptographic function, to
 generate a public((("public key cryptography", startref="pub-key")))((("key pairs", startref="key-pair"))) key (_K_).
 
+[role="less_space pagebreak-before"]
 .Why Use Asymmetric Cryptography (Public/Private Keys)?
 ****
 Why is ((("asymmetric cryptography", see="public key cryptography")))((("public key cryptography", "purpose in Bitcoin")))((("digital signatures")))asymmetric