diff --git a/core/grpc_service.go b/core/grpc_service.go
index f7bf672..fe88a5a 100644
--- a/core/grpc_service.go
+++ b/core/grpc_service.go
@@ -152,7 +152,7 @@
 		}).Debug("OLT receives FlowAdd().")
 
 		if flow.Classifier.EthType == uint32(layers.EthernetTypeEAPOL) {
-			omcistate := omci.GetOnuOmciState(onu.OnuID, onu.IntfID)
+			omcistate := omci.GetOnuOmciState(onu.IntfID, onu.OnuID)
 			if omcistate == omci.DONE {
 				s.updateOnuIntState(intfid, onuid, device.ONU_OMCIACTIVE)
 			} else {