diff --git a/cmd/talosctl/cmd/talos/health.go b/cmd/talosctl/cmd/talos/health.go
index 54bb4b6b8..a30ad2753 100644
--- a/cmd/talosctl/cmd/talos/health.go
+++ b/cmd/talosctl/cmd/talos/health.go
@@ -49,9 +49,9 @@ func (cluster *clusterNodes) NodesByType(t machine.Type) []string {
 
 		return []string{cluster.InitNode}
 	case machine.TypeControlPlane:
-		return cluster.ControlPlaneNodes
+		return append([]string(nil), cluster.ControlPlaneNodes...)
 	case machine.TypeJoin:
-		return cluster.WorkerNodes
+		return append([]string(nil), cluster.WorkerNodes...)
 	case machine.TypeUnknown:
 		return nil
 	default:
diff --git a/internal/app/machined/internal/server/v1alpha1/v1alpha1_cluster.go b/internal/app/machined/internal/server/v1alpha1/v1alpha1_cluster.go
index 23e6e3168..630bcffca 100644
--- a/internal/app/machined/internal/server/v1alpha1/v1alpha1_cluster.go
+++ b/internal/app/machined/internal/server/v1alpha1/v1alpha1_cluster.go
@@ -81,7 +81,7 @@ type clusterState struct {
 }
 
 func (cluster *clusterState) Nodes() []string {
-	return append(cluster.controlPlaneNodes, cluster.workerNodes...)
+	return append([]string(nil), append(cluster.controlPlaneNodes, cluster.workerNodes...)...)
 }
 
 func (cluster *clusterState) NodesByType(t machine.Type) []string {
@@ -89,9 +89,9 @@ func (cluster *clusterState) NodesByType(t machine.Type) []string {
 	case machine.TypeInit:
 		return nil
 	case machine.TypeControlPlane:
-		return cluster.controlPlaneNodes
+		return append([]string(nil), cluster.controlPlaneNodes...)
 	case machine.TypeJoin:
-		return cluster.workerNodes
+		return append([]string(nil), cluster.workerNodes...)
 	case machine.TypeUnknown:
 		return nil
 	default:
diff --git a/internal/integration/base/cluster.go b/internal/integration/base/cluster.go
index d04f944aa..c9c81b8d3 100644
--- a/internal/integration/base/cluster.go
+++ b/internal/integration/base/cluster.go
@@ -14,7 +14,7 @@ type infoWrapper struct {
 }
 
 func (wrapper *infoWrapper) Nodes() []string {
-	return append(wrapper.masterNodes, wrapper.workerNodes...)
+	return append([]string(nil), append(wrapper.masterNodes, wrapper.workerNodes...)...)
 }
 
 func (wrapper *infoWrapper) NodesByType(t machine.Type) []string {
@@ -22,9 +22,9 @@ func (wrapper *infoWrapper) NodesByType(t machine.Type) []string {
 	case machine.TypeInit:
 		return nil
 	case machine.TypeControlPlane:
-		return wrapper.masterNodes
+		return append([]string(nil), wrapper.masterNodes...)
 	case machine.TypeJoin:
-		return wrapper.workerNodes
+		return append([]string(nil), wrapper.workerNodes...)
 	default:
 		panic("unreachable")
 	}