diff --git a/README.md b/README.md
index 931dc6b..3098f84 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@
 of supported hardware targets, see the following example:
 
 ```
-$ . setup
+$ . setup <machine> [build_dir]
 Target machine must be specified. Use one of:
 
 centriq2400-rep         nicole                     stardragon4800-rep2
@@ -63,7 +63,7 @@
 Once you know the target (e.g. romulus), source the `setup` script as follows:
 
 ```
-. setup romulus
+. setup romulus build
 ```
 
 For evb-ast2500, please use the below command to specify the machine config,