diff --git a/pkg/controllers/subnetset/subnetset_controller.go b/pkg/controllers/subnetset/subnetset_controller.go
index 78c027d50..625d76bb6 100644
--- a/pkg/controllers/subnetset/subnetset_controller.go
+++ b/pkg/controllers/subnetset/subnetset_controller.go
@@ -19,9 +19,9 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/controller"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 	"sigs.k8s.io/controller-runtime/pkg/webhook"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
 
 	"github.com/vmware-tanzu/nsx-operator/pkg/apis/v1alpha1"
-
 	"github.com/vmware-tanzu/nsx-operator/pkg/config"
 	"github.com/vmware-tanzu/nsx-operator/pkg/controllers/common"
 	"github.com/vmware-tanzu/nsx-operator/pkg/logger"
@@ -343,7 +343,10 @@ func (r *SubnetSetReconciler) Start(mgr ctrl.Manager, enableWebhook bool) error
 		}
 		hookServer.Register("/validate-nsx-vmware-com-v1alpha1-subnetset",
 			&webhook.Admission{
-				Handler: &SubnetSetValidator{Client: mgr.GetClient()},
+				Handler: &SubnetSetValidator{
+					Client:  mgr.GetClient(),
+					decoder: admission.NewDecoder(mgr.GetScheme()),
+				},
 			})
 	}
 	go r.GarbageCollector(make(chan bool), servicecommon.GCInterval)
diff --git a/pkg/controllers/subnetset/subnetset_webhook.go b/pkg/controllers/subnetset/subnetset_webhook.go
index 618a9e35d..1597799c9 100644
--- a/pkg/controllers/subnetset/subnetset_webhook.go
+++ b/pkg/controllers/subnetset/subnetset_webhook.go
@@ -103,10 +103,3 @@ func (v *SubnetSetValidator) Handle(ctx context.Context, req admission.Request)
 	}
 	return admission.Allowed("")
 }
-
-// InjectDecoder injects the decoder into a validator.
-// A decoder will be automatically injected by controller-manager.
-func (v *SubnetSetValidator) InjectDecoder(d *admission.Decoder) error {
-	v.decoder = d
-	return nil
-}