diff --git a/ch04.asciidoc b/ch04.asciidoc
index 54c2a6d7..f8d7af73 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -460,6 +460,7 @@ x = F028892BAD7ED57D2FB57BF33081D5CFCF6F9ED3D3D7F159C2E2FFF579DC341A
 y = 07CF33DA18BD734C600B96A72BBC4749D5141C90EC8AC328AE52DDFE2E505BDB
 ----
 
+[role="pagebreak-before"]
 Here's the same public key shown as a 520-bit number (130 hex digits) with the prefix +04+ followed by +x+ and then +y+ coordinates, as +04 x y+:
 
 ++++