diff --git a/neutron/tests/tempest/README.rst b/neutron/tests/tempest/README.rst
index bc57df4..6f50970 100644
--- a/neutron/tests/tempest/README.rst
+++ b/neutron/tests/tempest/README.rst
@@ -4,3 +4,7 @@
 The files under this path are maintained automatically by the script
 tools/copy_api_tests_from_tempest.sh.  It's contents should not be
 manually modified until further notice.
+
+Note that neutron.tests.tempest.config uses the global cfg.CONF
+instance for now and importing it outside of the api tests has the
+potential to break Neutron's use of cfg.CONF.