diff --git a/doc/source/install-guide-revised-draft/app-advanced-config-options.rst b/doc/source/install-guide-revised-draft/app-advanced-config-options.rst
index bc6a754d12..110b379997 100644
--- a/doc/source/install-guide-revised-draft/app-advanced-config-options.rst
+++ b/doc/source/install-guide-revised-draft/app-advanced-config-options.rst
@@ -1,7 +1,7 @@
 `Home <index.html>`_ OpenStack-Ansible Installation Guide
 
 ===================================
-Appendix D: Advanced configuration
+Appendix E: Advanced configuration
 ===================================
 
 .. toctree::