diff --git a/pkg/nfs/nodeserver.go b/pkg/nfs/nodeserver.go
index 6fd29312..cff6a48d 100644
--- a/pkg/nfs/nodeserver.go
+++ b/pkg/nfs/nodeserver.go
@@ -208,12 +208,12 @@ func (ns *NodeServer) NodeGetVolumeStats(ctx context.Context, req *csi.NodeGetVo
 
 // NodeUnstageVolume unstage volume
 func (ns *NodeServer) NodeUnstageVolume(ctx context.Context, req *csi.NodeUnstageVolumeRequest) (*csi.NodeUnstageVolumeResponse, error) {
-	return &csi.NodeUnstageVolumeResponse{}, nil
+	return nil, status.Error(codes.Unimplemented, "")
 }
 
 // NodeStageVolume stage volume
 func (ns *NodeServer) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRequest) (*csi.NodeStageVolumeResponse, error) {
-	return &csi.NodeStageVolumeResponse{}, nil
+	return nil, status.Error(codes.Unimplemented, "")
 }
 
 // NodeExpandVolume node expand volume