diff --git a/pkg/karmadactl/unregister/unregister.go b/pkg/karmadactl/unregister/unregister.go
index 37c5a84c6..3f93834c4 100644
--- a/pkg/karmadactl/unregister/unregister.go
+++ b/pkg/karmadactl/unregister/unregister.go
@@ -128,10 +128,10 @@ type CommandUnregisterOption struct {
 	DryRun bool
 
 	// ControlPlaneClient control plane client set
-	ControlPlaneClient *karmadaclientset.Clientset
+	ControlPlaneClient karmadaclientset.Interface
 
 	// MemberClusterClient member cluster client set
-	MemberClusterClient *kubeclient.Clientset
+	MemberClusterClient kubeclient.Interface
 }
 
 // AddFlags adds flags to the specified FlagSet.
diff --git a/pkg/karmadactl/util/cluster.go b/pkg/karmadactl/util/cluster.go
index d7b9a6ca1..ff578c632 100644
--- a/pkg/karmadactl/util/cluster.go
+++ b/pkg/karmadactl/util/cluster.go
@@ -30,7 +30,7 @@ import (
 )
 
 // DeleteClusterObject deletes the cluster object from the Karmada control plane.
-func DeleteClusterObject(controlPlaneKarmadaClient *karmadaclientset.Clientset, clusterName string,
+func DeleteClusterObject(controlPlaneKarmadaClient karmadaclientset.Interface, clusterName string,
 	timeout time.Duration, dryRun bool) error {
 	if dryRun {
 		return nil