diff --git a/s3tests.conf.SAMPLE b/s3tests.conf.SAMPLE
index f479766..54c642f 100644
--- a/s3tests.conf.SAMPLE
+++ b/s3tests.conf.SAMPLE
@@ -26,7 +26,8 @@ user_id = testid
 # main email set in vstart.sh
 email = tester@ceph.com
 
-api_name = ""
+# zonegroup api_name for bucket location
+api_name = default
 
 ## main AWS access key
 access_key = 0555b35654ad1656d804