diff --git a/federation/pkg/federation-controller/cluster/cluster_client.go b/federation/pkg/federation-controller/cluster/cluster_client.go
index abe2f5fc6ec..c9f963588c6 100644
--- a/federation/pkg/federation-controller/cluster/cluster_client.go
+++ b/federation/pkg/federation-controller/cluster/cluster_client.go
@@ -24,7 +24,6 @@ import (
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/sets"
-	"k8s.io/client-go/discovery"
 	restclient "k8s.io/client-go/rest"
 	federation_v1beta1 "k8s.io/kubernetes/federation/apis/federation/v1beta1"
 	"k8s.io/kubernetes/federation/pkg/federation-controller/util"
@@ -38,8 +37,7 @@ const (
 )
 
 type ClusterClient struct {
-	discoveryClient *discovery.DiscoveryClient
-	kubeClient      *clientset.Clientset
+	kubeClient *clientset.Clientset
 }
 
 func NewClusterClientSet(c *federation_v1beta1.Cluster) (*ClusterClient, error) {
@@ -49,10 +47,6 @@ func NewClusterClientSet(c *federation_v1beta1.Cluster) (*ClusterClient, error)
 	}
 	var clusterClientSet = ClusterClient{}
 	if clusterConfig != nil {
-		clusterClientSet.discoveryClient = discovery.NewDiscoveryClientForConfigOrDie((restclient.AddUserAgent(clusterConfig, UserAgentName)))
-		if clusterClientSet.discoveryClient == nil {
-			return nil, nil
-		}
 		clusterClientSet.kubeClient = clientset.NewForConfigOrDie((restclient.AddUserAgent(clusterConfig, UserAgentName)))
 		if clusterClientSet.kubeClient == nil {
 			return nil, nil
@@ -97,7 +91,7 @@ func (self *ClusterClient) GetClusterHealthStatus() *federation_v1beta1.ClusterS
 		LastProbeTime:      currentTime,
 		LastTransitionTime: currentTime,
 	}
-	body, err := self.discoveryClient.RESTClient().Get().AbsPath("/healthz").Do().Raw()
+	body, err := self.kubeClient.DiscoveryClient.RESTClient().Get().AbsPath("/healthz").Do().Raw()
 	if err != nil {
 		clusterStatus.Conditions = append(clusterStatus.Conditions, newNodeOfflineCondition)
 	} else {