diff --git a/pkg/cluster/config/types.go b/pkg/cluster/config/types.go
index 11d2398b61..48dc10936e 100644
--- a/pkg/cluster/config/types.go
+++ b/pkg/cluster/config/types.go
@@ -75,7 +75,9 @@ type NodeRole string
 
 const (
 	// ControlPlaneRole identifies a node that hosts a Kubernetes control-plane.
-	// NOTE: in single node clusters, control-plane nodes act also as a worker nodes
+	// NOTE: in single node clusters, control-plane nodes act also as a worker
+	// nodes, in which case the taint will be removed. see:
+	// https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/#control-plane-node-isolation
 	ControlPlaneRole NodeRole = "control-plane"
 	// WorkerRole identifies a node that hosts a Kubernetes worker
 	WorkerRole NodeRole = "worker"
diff --git a/pkg/cluster/config/v1alpha2/types.go b/pkg/cluster/config/v1alpha2/types.go
index 2ff2b81627..3b4dabe1a3 100644
--- a/pkg/cluster/config/v1alpha2/types.go
+++ b/pkg/cluster/config/v1alpha2/types.go
@@ -68,7 +68,9 @@ type NodeRole string
 
 const (
 	// ControlPlaneRole identifies a node that hosts a Kubernetes control-plane.
-	// NB. in single node clusters, control-plane nodes act also as a worker nodes
+	// NOTE: in single node clusters, control-plane nodes act also as a worker
+	// nodes, in which case the taint will be removed. see:
+	// https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/#control-plane-node-isolation
 	ControlPlaneRole NodeRole = "control-plane"
 	// WorkerRole identifies a node that hosts a Kubernetes worker
 	WorkerRole NodeRole = "worker"
diff --git a/pkg/cluster/config/v1alpha3/types.go b/pkg/cluster/config/v1alpha3/types.go
index f4678d4fdc..783e2af74b 100644
--- a/pkg/cluster/config/v1alpha3/types.go
+++ b/pkg/cluster/config/v1alpha3/types.go
@@ -75,7 +75,9 @@ type NodeRole string
 
 const (
 	// ControlPlaneRole identifies a node that hosts a Kubernetes control-plane.
-	// NOTE: in single node clusters, control-plane nodes act also as a worker nodes
+	// NOTE: in single node clusters, control-plane nodes act also as a worker
+	// nodes, in which case the taint will be removed. see:
+	// https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/#control-plane-node-isolation
 	ControlPlaneRole NodeRole = "control-plane"
 	// WorkerRole identifies a node that hosts a Kubernetes worker
 	WorkerRole NodeRole = "worker"