diff --git a/docs/tips.rst b/docs/tips.rst
index 50160380..fab9145b 100644
--- a/docs/tips.rst
+++ b/docs/tips.rst
@@ -46,6 +46,11 @@ Project Pages and User Pages.
 Project Pages
 -------------
 
+.. note::
+    
+    ``RELATIVE_URLS`` must be set to ``True`` when you deploy on GitHub as a
+    Project Page. Otherwise the links to the static files are wrong.
+
 To publish a Pelican site as a Project Page you need to *push* the content of
 the ``output`` dir generated by Pelican to a repository's ``gh-pages`` branch
 on GitHub.