diff --git a/pkg/clustercache/controller.go b/pkg/clustercache/controller.go
index f879323d6..3884800d7 100644
--- a/pkg/clustercache/controller.go
+++ b/pkg/clustercache/controller.go
@@ -216,6 +216,7 @@ func (h *clusterCache) List(gvr schema2.GroupVersionResource) []interface{} {
 }
 
 func (h *clusterCache) start() {
+	defer h.workqueue.ShutDown()
 	for {
 		eventObj, ok := h.workqueue.Get()
 		if ok {
@@ -247,6 +248,7 @@ func (h *clusterCache) start() {
 				logrus.Errorf("failed to handle remove event: %v", err)
 			}
 		}
+		h.workqueue.Done(eventObj)
 	}
 }