diff --git a/ch04.asciidoc b/ch04.asciidoc
index 290f68bf..d46632e3 100644
--- a/ch04.asciidoc
+++ b/ch04.asciidoc
@@ -310,7 +310,7 @@ include::code/addr.cpp[]
 ----
 ====
 
-The code uses a predefined private key, so that it produces the same bitcoin address every time it is run as shown in <<addr_example_run>>.(((range="endofrange", startref="ix_ch04-asciidoc12")))(((range="endofrange", startref="ix_ch04-asciidoc11")))(((range="endofrange", startref="ix_ch04-asciidoc10")))(((range="endofrange", startref="ix_ch04-asciidoc9")))
+The code uses a predefined private key so that it produces the same bitcoin address every time it is run, as shown in <<addr_example_run>>.(((range="endofrange", startref="ix_ch04-asciidoc12")))(((range="endofrange", startref="ix_ch04-asciidoc11")))(((range="endofrange", startref="ix_ch04-asciidoc10")))(((range="endofrange", startref="ix_ch04-asciidoc9")))
 
 [[addr_example_run]]
 .Compiling and running the addr code