diff --git a/README.md b/README.md
index 3ad3006..519f1b7 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,10 @@ This repo is based on the omega-rpg-0.90 source code.
 
 It is here for me to explore the code and make tweaks.
 
+### Building on SDF cluster
+
+`cd tools && make && cd .. && make omega`
+
 ## Original readme
 
 Note that omega is copyrighted. See the public license in license.txt in