diff --git a/BrucesNotes.txt b/BrucesNotes.txt
index 2547e7719e5d4fc01864638c896126801df3b8b8..58b30ee816174c12d826d0d49961891e8553e372 100644
--- a/BrucesNotes.txt
+++ b/BrucesNotes.txt
@@ -2,6 +2,11 @@ git clone git@gitlab.aei.uni-hannover.de:einsteinathome/pulsatingscience.git
 
 git checkout -b antenna-patterns origin/antenna-patterns
 
+to do linux builds, use einstein9, which you can reach via atlas5.
+to do mac builds, use denholm, which can be reached via the normal
+AEI network.
+
+
 Mac instructions
 (1) Get the executable from
     www.atlas.aei.uni-hannover.de/~ballen/LSC/GW170817.app.tar