fixing test keywords
Change-Id: Idb15bc53592046bc86c37f6eb1deb07303a8d875
diff --git a/libraries/voltctl.robot b/libraries/voltctl.robot
index cd4604c..adca1fe 100644
--- a/libraries/voltctl.robot
+++ b/libraries/voltctl.robot
@@ -41,7 +41,7 @@
Should Be Equal As Integers ${rc} 0
Validate Device
- [Arguments] ${serial_number} ${admin_state} ${oper_status} ${connect_status} ${onu_reason} ${onu}=False
+ [Arguments] ${serial_number} ${admin_state} ${oper_status} ${connect_status} ${onu_reason}=${EMPTY} ${onu}=False
[Documentation] Parses the output of "voltctl device list" and inspects device ${serial_number}
... Arguments are matched for device states of: "admin_state", "oper_status", and "connect_status"
${output}= Run ${VOLTCTL_CONFIG}; voltctl device list -o json