diff --git a/spinnman/spinnman.cfg b/spinnman/spinnman.cfg
index e97f9352b..e530f855f 100644
--- a/spinnman/spinnman.cfg
+++ b/spinnman/spinnman.cfg
@@ -19,6 +19,7 @@ turn_off_machine = False
 #     <host> is the hostname or IP address of the BMP
 #     <board_range> is a range of boards that the BMP can speak to
 #     <board_id> is the ID of a single board in a frame
+# Note this no longer supports multiple host nor cabinet or frame
 bmp_names = None
 
 auto_detect_bmp = False