diff --git a/agents/fsevent.go b/agents/fsevent.go
index 4223e460b..67a84beac 100644
--- a/agents/fsevent.go
+++ b/agents/fsevent.go
@@ -400,7 +400,8 @@ func (fsev FSEvent) V1AuthorizeArgs() (args *sessions.V1AuthorizeArgs) {
 	if err != nil {
 		return
 	}
-	args = &sessions.V1AuthorizeArgs{ // defaults
+	cgrEv.Event[utils.Usage] = config.CgrConfig().SessionSCfg().MaxCallDuration // no billsec available in auth
+	args = &sessions.V1AuthorizeArgs{                                           // defaults
 		GetMaxUsage: true,
 		CGREvent:    *cgrEv,
 	}
diff --git a/agents/fsevent_test.go b/agents/fsevent_test.go
index 9083dfcf3..96de79ee8 100644
--- a/agents/fsevent_test.go
+++ b/agents/fsevent_test.go
@@ -998,6 +998,7 @@ func TestFsEvV1AuthorizeArgs(t *testing.T) {
 		SuppliersIgnoreErrors: true,
 		SuppliersMaxCost:      utils.MetaEventCost,
 	}
+	expected.Event[utils.Usage] = config.CgrConfig().SessionSCfg().MaxCallDuration
 	rcv := ev.V1AuthorizeArgs()
 	if !reflect.DeepEqual(expected.CGREvent.Tenant, rcv.CGREvent.Tenant) {
 		t.Errorf("Expecting: %+v, received: %+v", expected.CGREvent.Tenant, rcv.CGREvent.Tenant)