diff --git a/docs/topics/customization.rst b/docs/topics/customization.rst
index d02c96a485..83ee7eeabe 100644
--- a/docs/topics/customization.rst
+++ b/docs/topics/customization.rst
@@ -33,3 +33,5 @@ people without the menu icons, for this **Mayan EDMS** provides the
 
 .. image:: no-icons.png
  :alt: mayan screens with out icons
+
+.. _`Andrea Franz's excellent web app template`: https://github.com/pilu/web-app-theme