diff --git a/ch03.asciidoc b/ch03.asciidoc
index fda727b7..4503cad4 100644
--- a/ch03.asciidoc
+++ b/ch03.asciidoc
@@ -1212,7 +1212,7 @@ include::code/pycoin_example.py[]
 ----
 ====
 
-For many examples using the command-line utilities ku and tx, see <<Appendix_pycoin_ku_and_tx>>
+For many examples using the command-line utilities ku and tx, see <<appendix>>
 
 
 ==== btcd