diff --git a/pkg/compute/models/loadbalancerlistenerrules.go b/pkg/compute/models/loadbalancerlistenerrules.go
index ae02f34fdd..bab9261419 100644
--- a/pkg/compute/models/loadbalancerlistenerrules.go
+++ b/pkg/compute/models/loadbalancerlistenerrules.go
@@ -467,7 +467,8 @@ func (lbr *SLoadbalancerListenerRule) AllowPerformStatus(ctx context.Context, us
 
 func (lbr *SLoadbalancerListenerRule) ValidateUpdateData(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data *jsonutils.JSONDict) (*jsonutils.JSONDict, error) {
 	backendGroupV := validators.NewModelIdOrNameValidator("backend_group", "loadbalancerbackendgroup", lbr.GetOwnerId())
-	if err := backendGroupV.Optional(true).Validate(data); err != nil {
+	backendGroupV.Optional(true)
+	if err := backendGroupV.Validate(data); err != nil {
 		return nil, err
 	}
 
diff --git a/pkg/compute/models/loadbalancerlisteners.go b/pkg/compute/models/loadbalancerlisteners.go
index a2b74a8c40..67118d1e9a 100644
--- a/pkg/compute/models/loadbalancerlisteners.go
+++ b/pkg/compute/models/loadbalancerlisteners.go
@@ -319,6 +319,7 @@ func (lblis *SLoadbalancerListener) StartLoadBalancerListenerSyncstatusTask(ctx
 func (lblis *SLoadbalancerListener) ValidateUpdateData(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject, data *jsonutils.JSONDict) (*jsonutils.JSONDict, error) {
 	ownerId := lblis.GetOwnerId()
 	backendGroupV := validators.NewModelIdOrNameValidator("backend_group", "loadbalancerbackendgroup", ownerId)
+	backendGroupV.Optional(true)
 	if err := backendGroupV.Validate(data); err != nil {
 		return nil, err
 	}