diff --git a/monitoring/k3s.libsonnet b/monitoring/k3s.libsonnet
index b1bf8e0..f3b7657 100644
--- a/monitoring/k3s.libsonnet
+++ b/monitoring/k3s.libsonnet
@@ -14,7 +14,7 @@ local masterIP = '185.95.218.11';
       service.mixin.metadata.withNamespace('kube-system') +
       service.mixin.metadata.withLabels({ 'k8s-app': 'kube-scheduler' }) +
       service.mixin.spec.withClusterIp('None') +
-      service.mixin.spec.withSelector(''),
+      service.mixin.spec.withSelector({}),
     kubeSchedulerPrometheusDiscoveryEndpoints:
       local port = endpointPort.new() +
                    endpointPort.withName('http-metrics') +
@@ -37,7 +37,7 @@ local masterIP = '185.95.218.11';
       service.mixin.metadata.withNamespace('kube-system') +
       service.mixin.metadata.withLabels({ 'k8s-app': 'kube-controller-manager' }) +
       service.mixin.spec.withClusterIp('None') +
-      service.mixin.spec.withSelector(''),
+      service.mixin.spec.withSelector({}),
     kubeControllerManagerPrometheusDiscoveryEndpoints:
       local port = endpointPort.new() +
                    endpointPort.withName('http-metrics') +
diff --git a/monitoring/manifests/prometheus-kubeControllerManagerPrometheusDiscoveryService.yaml b/monitoring/manifests/prometheus-kubeControllerManagerPrometheusDiscoveryService.yaml
index 325b862..70bfd1b 100644
--- a/monitoring/manifests/prometheus-kubeControllerManagerPrometheusDiscoveryService.yaml
+++ b/monitoring/manifests/prometheus-kubeControllerManagerPrometheusDiscoveryService.yaml
@@ -11,3 +11,4 @@ spec:
   - name: http-metrics
     port: 10252
     targetPort: 10252
+  selector: {}
diff --git a/monitoring/manifests/prometheus-kubeSchedulerPrometheusDiscoveryService.yaml b/monitoring/manifests/prometheus-kubeSchedulerPrometheusDiscoveryService.yaml
index 10783bf..ad76360 100644
--- a/monitoring/manifests/prometheus-kubeSchedulerPrometheusDiscoveryService.yaml
+++ b/monitoring/manifests/prometheus-kubeSchedulerPrometheusDiscoveryService.yaml
@@ -11,3 +11,4 @@ spec:
   - name: http-metrics
     port: 10251
     targetPort: 10251
+  selector: {}