diff --git a/pkg/karmadactl/get.go b/pkg/karmadactl/get.go
index 7d49e4669..6700de7b4 100644
--- a/pkg/karmadactl/get.go
+++ b/pkg/karmadactl/get.go
@@ -90,7 +90,6 @@ func NewCmdGet(karmadaConfig KarmadaConfig, parentCommand string) *cobra.Command
 	cmd.Flags().StringVarP(&o.Namespace, "namespace", "n", o.Namespace, "-n=namespace or -n namespace")
 	cmd.Flags().StringVarP(&o.LabelSelector, "labels", "l", "", "-l=label or -l label")
 	cmd.Flags().StringSliceVarP(&o.Clusters, "clusters", "C", []string{}, "-C=member1,member2")
-	cmd.Flags().StringVar(&o.ClusterNamespace, "cluster-namespace", options.DefaultKarmadaClusterNamespace, "Namespace in the control plane where member cluster secrets are stored.")
 	cmd.Flags().BoolVarP(&o.AllNamespaces, "all-namespaces", "A", o.AllNamespaces, "If present, list the requested object(s) across all namespaces. Namespace in current context is ignored even if specified with --namespace.")
 	cmd.Flags().BoolVar(&o.IgnoreNotFound, "ignore-not-found", o.IgnoreNotFound, "If the requested object does not exist the command will return exit code 0.")
 	cmd.Flags().BoolVarP(&o.Watch, "watch", "w", o.Watch, "After listing/getting the requested object, watch for changes. Uninitialized objects are excluded if no object name is provided.")
@@ -105,9 +104,6 @@ type CommandGetOptions struct {
 	// global flags
 	options.GlobalCommandOptions
 
-	// ClusterNamespace holds the namespace name where the member cluster secrets are stored.
-	ClusterNamespace string
-
 	Clusters []string
 
 	PrintFlags             *get.PrintFlags