diff --git a/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_endpointslice_controller.go b/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_endpointslice_controller.go
index f183b382c..fc7fe6768 100644
--- a/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_endpointslice_controller.go
+++ b/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_endpointslice_controller.go
@@ -181,7 +181,7 @@ func (c *SimpleSyncEPSController) createNamespace(client client.Client, namespac
 
 // nolint:dupl
 func (c *SimpleSyncEPSController) cleanUpEpsInLeafCluster(namespace string, name string) error {
-	clusters := c.GlobalLeafManager.ListClusters()
+	clusters := c.GlobalLeafClientManager.ListActualClusters()
 	var errs []string
 	for _, cluster := range clusters {
 		leafClient, err := c.GlobalLeafManager.GetLeafResource(cluster)
diff --git a/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_service_controller.go b/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_service_controller.go
index 9e14017f4..17fad2f5f 100644
--- a/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_service_controller.go
+++ b/pkg/clustertree/cluster-manager/controllers/svc/simple_sync_service_controller.go
@@ -192,7 +192,7 @@ func (c *SimpleSyncServiceController) cleanUpServiceInLeafCluster(namespace stri
 }
 
 func (c *SimpleSyncServiceController) syncServiceInLeafCluster(service *corev1.Service) error {
-	clusters := c.GlobalLeafManager.ListClusters()
+	clusters := c.GlobalLeafClientManager.ListActualClusters()
 	errsChan := make(chan string, len(clusters))
 	var wg sync.WaitGroup
 	for _, cluster := range clusters {
diff --git a/pkg/clustertree/cluster-manager/utils/leaf_client_resource_manager.go b/pkg/clustertree/cluster-manager/utils/leaf_client_resource_manager.go
index 3fe5cdc09..16da61706 100644
--- a/pkg/clustertree/cluster-manager/utils/leaf_client_resource_manager.go
+++ b/pkg/clustertree/cluster-manager/utils/leaf_client_resource_manager.go
@@ -33,6 +33,8 @@ type LeafClientResourceManager interface {
 	RemoveLeafClientResource(actualClusterName string)
 
 	GetLeafResource(actualClusterName string) (*LeafClientResource, error)
+
+	ListActualClusters() []string
 }
 
 type leafClientResourceManager struct {
@@ -63,6 +65,21 @@ func (cr *leafClientResourceManager) AddLeafClientResource(lcr *LeafClientResour
 	}
 }
 
+func (cr *leafClientResourceManager) ListActualClusters() []string {
+	cr.leafClientResourceManagersLock.Lock()
+	defer cr.leafClientResourceManagersLock.Unlock()
+
+	keys := make([]string, 0)
+	for k := range cr.clientResourceMap {
+		if len(k) == 0 {
+			continue
+		}
+
+		keys = append(keys, k)
+	}
+	return keys
+}
+
 func (cr *leafClientResourceManager) RemoveLeafClientResource(actualClusterName string) {
 	cr.leafClientResourceManagersLock.Lock()
 	defer cr.leafClientResourceManagersLock.Unlock()