diff --git a/tools/testClient/README b/tools/testClient/README
index f8e18e74bc0..cbb7879e778 100644
--- a/tools/testClient/README
+++ b/tools/testClient/README
@@ -1,6 +1,9 @@
 CloudStack Test Client
 1. generate Cloudstack API python code from an API XML spec file
    python codegenerator.py  -o where-to-put-the-cloudstack-api -s where-the-spec-file
+1.5 Spec file is generated by
+   ant build-apidocs
+   -> generates commands.xml in dist
 
 2. Facility it provides:
   1. very handy cloudstack API python wrapper