diff --git a/book.asciidoc b/book.asciidoc
index fe1f66f9..6761a396 100644
--- a/book.asciidoc
+++ b/book.asciidoc
@@ -34,6 +34,6 @@ include::appdx-pycoin.asciidoc[]
 
 include::appdx-sx.asciidoc[]
 
-include::colo.asciidoc[]
+include::index.asciidoc[]
 
-include::index.asciidoc[]
\ No newline at end of file
+include::colo.asciidoc[]
\ No newline at end of file