diff --git a/examples/namespaced-gatewayapi/kustomization.yaml b/examples/namespaced-gatewayapi/kustomization.yaml
index 3e1c1879224..b2c3f6173cd 100644
--- a/examples/namespaced-gatewayapi/kustomization.yaml
+++ b/examples/namespaced-gatewayapi/kustomization.yaml
@@ -77,13 +77,3 @@ patches:
       kind: ClusterRole
       name: contour
       version: v1
-  - patch: |-
-      - op: add
-        path: /spec/template/spec/containers/0/args/-
-        value: --watch-namespaces=projectcontour
-    target:
-      group: apps
-      kind: Deployment
-      name: contour
-      version: v1
-
diff --git a/internal/provisioner/objects/deployment/deployment_test.go b/internal/provisioner/objects/deployment/deployment_test.go
index c53fc85a189..e54889c9575 100644
--- a/internal/provisioner/objects/deployment/deployment_test.go
+++ b/internal/provisioner/objects/deployment/deployment_test.go
@@ -140,7 +140,7 @@ func TestDesiredDeployment(t *testing.T) {
 	cntr := model.Default(fmt.Sprintf("%s-ns", name), name)
 	icName := "test-ic"
 	cntr.Spec.IngressClassName = &icName
-
+	testNamespaces := "ns1,ns2,ns3"
 	resQutoa := corev1.ResourceRequirements{
 		Limits: corev1.ResourceList{
 			corev1.ResourceCPU:    resource.MustParse("400m"),
@@ -164,6 +164,9 @@ func TestDesiredDeployment(t *testing.T) {
 	// Change the Contour log level to test --debug.
 	cntr.Spec.ContourLogLevel = v1alpha1.DebugLog
 
+	// Change the Contour watch namespaces falg
+	cntr.Spec.WatchNamespaces = &testNamespaces
+
 	cntr.Spec.ResourceLabels = map[string]string{
 		"key": "value",
 	}
@@ -207,10 +210,14 @@ func TestDesiredDeployment(t *testing.T) {
 	arg = fmt.Sprintf("--kubernetes-debug=%d", cntr.Spec.KubernetesLogLevel)
 	checkContainerHasArg(t, container, arg)
 
+	arg = fmt.Sprintf("--watch-namespaces=%s", *cntr.Spec.WatchNamespaces)
+	checkContainerHasArg(t, container, arg)
+
 	checkDeploymentHasNodeSelector(t, deploy, nil)
 	checkDeploymentHasTolerations(t, deploy, nil)
 	checkDeploymentHasResourceRequirements(t, deploy, resQutoa)
 	checkDeploymentHasStrategy(t, deploy, cntr.Spec.ContourDeploymentStrategy)
+
 }
 
 func TestNodePlacementDeployment(t *testing.T) {