diff --git a/cmd/kubeadm/app/apis/kubeadm/v1beta4/types.go b/cmd/kubeadm/app/apis/kubeadm/v1beta4/types.go
index af129de683e..75db9e179ba 100644
--- a/cmd/kubeadm/app/apis/kubeadm/v1beta4/types.go
+++ b/cmd/kubeadm/app/apis/kubeadm/v1beta4/types.go
@@ -179,9 +179,6 @@ type APIServer struct {
 	TimeoutForControlPlane *metav1.Duration `json:"timeoutForControlPlane,omitempty"`
 }
 
-// DNSAddOnType defines string identifying DNS add-on types
-type DNSAddOnType string
-
 // DNS defines the DNS addon that should be used in the cluster
 type DNS struct {
 	// ImageMeta allows to customize the image used for the DNS component