diff --git a/cluster/syncer/statefulset.go b/cluster/syncer/statefulset.go
index 50d726607..544ca15e9 100644
--- a/cluster/syncer/statefulset.go
+++ b/cluster/syncer/statefulset.go
@@ -185,8 +185,7 @@ func (s *StatefulSetSyncer) updatePod(ctx context.Context) error {
 	log.Info("statefulSet was changed, run update")
 
 	if s.sfs.Status.ReadyReplicas < s.sfs.Status.Replicas {
-		log.Info("can't start/continue 'update': waiting for all replicas are ready")
-		return nil
+		return fmt.Errorf("can't start/continue 'update': waiting for all replicas are ready")
 	}
 
 	pods := corev1.PodList{}