diff --git a/cmd/kube-controller-manager/app/options/options.go b/cmd/kube-controller-manager/app/options/options.go
index c99b8022e66..f6463b966e6 100644
--- a/cmd/kube-controller-manager/app/options/options.go
+++ b/cmd/kube-controller-manager/app/options/options.go
@@ -97,6 +97,7 @@ func NewCMServer() *CMServer {
 			ClusterSigningKeyFile:   "/etc/kubernetes/ca/ca.key",
 		},
 	}
+	s.LeaderElection.LeaderElect = true
 	return &s
 }
 
diff --git a/plugin/cmd/kube-scheduler/app/options/options.go b/plugin/cmd/kube-scheduler/app/options/options.go
index 30747a483ac..4d84dcd225f 100644
--- a/plugin/cmd/kube-scheduler/app/options/options.go
+++ b/plugin/cmd/kube-scheduler/app/options/options.go
@@ -42,6 +42,7 @@ type SchedulerServer struct {
 func NewSchedulerServer() *SchedulerServer {
 	config := componentconfig.KubeSchedulerConfiguration{}
 	api.Scheme.Convert(&v1alpha1.KubeSchedulerConfiguration{}, &config)
+	config.LeaderElection.LeaderElect = true
 	s := SchedulerServer{
 		KubeSchedulerConfiguration: config,
 	}