diff --git a/pkg/appfile/appfile.go b/pkg/appfile/appfile.go
index 6c474b4c5..943cac3e2 100644
--- a/pkg/appfile/appfile.go
+++ b/pkg/appfile/appfile.go
@@ -64,12 +64,12 @@ func (app *AppFile) BuildOAM(ns string, io cmdutil.IOStreams, tm template.Manage
 }
 
 // RenderOAM renders Appfile into AppConfig, Components.
-func (app *AppFile) RenderOAM(ns string, io cmdutil.IOStreams, tm template.Manager, slience bool) (
+func (app *AppFile) RenderOAM(ns string, io cmdutil.IOStreams, tm template.Manager, silence bool) (
 	[]*v1alpha2.Component, *v1alpha2.ApplicationConfiguration, []oam.Object, error) {
-	return app.buildOAM(ns, io, false, tm, slience)
+	return app.buildOAM(ns, io, false, tm, silence)
 }
 
-func (app *AppFile) buildOAM(ns string, io cmdutil.IOStreams, buildImage bool, tm template.Manager, slience bool) (
+func (app *AppFile) buildOAM(ns string, io cmdutil.IOStreams, buildImage bool, tm template.Manager, silence bool) (
 	[]*v1alpha2.Component, *v1alpha2.ApplicationConfiguration, []oam.Object, error) {
 
 	appConfig := &v1alpha2.ApplicationConfiguration{
@@ -99,7 +99,7 @@ func (app *AppFile) buildOAM(ns string, io cmdutil.IOStreams, buildImage bool, t
 				}
 			}
 		}
-		if !slience {
+		if !silence {
 			io.Infof("\nRendering configs for service (%s)...\n", sname)
 		}
 		acComp, comp, err := svc.RenderService(tm, sname, ns, app.configGetter)
diff --git a/pkg/application/app.go b/pkg/application/app.go
index aea53e159..c858bc310 100644
--- a/pkg/application/app.go
+++ b/pkg/application/app.go
@@ -221,8 +221,8 @@ func (app *Application) GetTraitsByType(componentName, traitType string) (map[st
 }
 
 // TODO(wonderflow) add scope support here
-func (app *Application) OAM(env *types.EnvMeta, io cmdutil.IOStreams, slience bool) ([]*v1alpha2.Component, *v1alpha2.ApplicationConfiguration, []oam.Object, error) {
-	comps, appConfig, scopes, err := app.RenderOAM(env.Namespace, io, app.tm, slience)
+func (app *Application) OAM(env *types.EnvMeta, io cmdutil.IOStreams, silence bool) ([]*v1alpha2.Component, *v1alpha2.ApplicationConfiguration, []oam.Object, error) {
+	comps, appConfig, scopes, err := app.RenderOAM(env.Namespace, io, app.tm, silence)
 	if err != nil {
 		return nil, nil, nil, err
 	}
diff --git a/pkg/commands/ls.go b/pkg/commands/ls.go
index 016757faf..1b4e15532 100644
--- a/pkg/commands/ls.go
+++ b/pkg/commands/ls.go
@@ -4,6 +4,8 @@ import (
 	"context"
 	"strings"
 
+	"github.com/crossplane/oam-kubernetes-runtime/apis/core/v1alpha2"
+
 	gocmp "github.com/google/go-cmp/cmp"
 	"github.com/gosuri/uitable"
 	"github.com/spf13/cobra"
@@ -70,13 +72,13 @@ func printComponentList(ctx context.Context, c client.Client, appName string, en
 }
 
 func mergeStagingComponents(deployed []apis.ComponentMeta, env *types.EnvMeta, ioStreams cmdutil.IOStreams) []apis.ComponentMeta {
-	apps, err := application.List(env.Name)
+	localApps, err := application.List(env.Name)
 	if err != nil {
 		ioStreams.Error("list application err", err)
 		return deployed
 	}
 	var all []apis.ComponentMeta
-	for _, app := range apps {
+	for _, app := range localApps {
 		comps, appConfig, _, err := app.OAM(env, ioStreams, true)
 		if err != nil {
 			ioStreams.Errorf("convert app %s err %v\n", app.Name, err)
@@ -113,7 +115,11 @@ func mergeStagingComponents(deployed []apis.ComponentMeta, env *types.EnvMeta, i
 					v.Traits[j] = t
 				}
 				aspec.Components[i] = v
+				if compMeta.AppConfig.Spec.Components[i].Traits == nil && len(v.Traits) == 0 {
+					compMeta.AppConfig.Spec.Components[i].Traits = make([]v1alpha2.ComponentTrait, 0)
+				}
 			}
+
 			if !gocmp.Equal(compMeta.Component.Spec, *cspec) || !gocmp.Equal(compMeta.AppConfig.Spec, *aspec) {
 				compMeta.Status = types.StatusStaging
 			}
diff --git a/pkg/controller/v1alpha1/routes/route_controller_test.go b/pkg/controller/v1alpha1/routes/route_controller_test.go
index a1b9c610f..d08b83c55 100644
--- a/pkg/controller/v1alpha1/routes/route_controller_test.go
+++ b/pkg/controller/v1alpha1/routes/route_controller_test.go
@@ -5,6 +5,8 @@ import (
 	"errors"
 	"time"
 
+	"github.com/crossplane/oam-kubernetes-runtime/pkg/oam"
+
 	"github.com/oam-dev/kubevela/api/v1alpha1"
 
 	"github.com/crossplane/oam-kubernetes-runtime/apis/core/v1alpha2"
@@ -134,7 +136,7 @@ var _ = Describe("Route Trait Integration Test", func() {
 									"kind":       "Route",
 									"metadata": map[string]interface{}{
 										"labels": map[string]interface{}{
-											"trait.oam.dev/type": "route",
+											oam.TraitTypeLabel: "route",
 										},
 									},
 									"spec": map[string]interface{}{