diff --git a/demo_test/functional_test/README b/demo_test/functional_test/README
index f8dd0e6..daba620 100644
--- a/demo_test/functional_test/README
+++ b/demo_test/functional_test/README
@@ -30,6 +30,11 @@
       iii) At command line, type
 	robot importer.robot
 
+      Note: If ../../voltha-system-tests does not exist, and the tests are run without
+            the use_mock_redfish variable set, then two harmless warnings will be emitted
+	    due to the missing robot voltha imports. These imports are only required
+	    when use_mock_redfish==True.
+
 2. Manual testing at command line
    To build 'dm', at command line, type
 	make