diff --git a/README.md b/README.md
index 3ead0c54..0edf7492 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,8 @@
 This is a directory-first photo gallery website, optimised for running on low resource servers (especially on raspberry pi)
 
 ## Live Demo
-Live Demo @ heroku: https://pigallery2.herokuapp.com/
+Live Demo @ heroku: https://pigallery2.herokuapp.com/ 
+ - the demo page **first load** might take up **30s**: the time while the free webservice boots up
 
 ## Table of contents
 1. [Getting started](#getting-started-on-raspberry-pi-1)