diff --git a/libraries/onos.robot b/libraries/onos.robot
index 6cc30a4..72d7c8a 100755
--- a/libraries/onos.robot
+++ b/libraries/onos.robot
@@ -173,7 +173,7 @@
     # Verify ipv4 dhcp upstream flow
     ${upstream_flow_ipv4_cmd}=    Catenate    SEPARATOR=
     ...    flows -s ADDED ${olt_of_id} | grep IN_PORT:${onu_port} | grep ETH_TYPE:ipv4 |
-    ...     grep IP_PROTO:17 | grep UDP_SRC:68 | grep UDP_DST:67 | grep VLAN_VID:${c_tag} |
+    ...     grep IP_PROTO:17 | grep UDP_SRC:68 | grep UDP_DST:67 | grep VLAN_ID:${c_tag} |
     ...     grep OUTPUT:CONTROLLER
     ${upstream_flow_ipv4_added}=    Execute ONOS CLI Command    ${ip}    ${port}
     ...    ${upstream_flow_ipv4_cmd}