diff --git a/backend/pikpak/pikpak.go b/backend/pikpak/pikpak.go
index b70ecf92a..f2a1390f1 100644
--- a/backend/pikpak/pikpak.go
+++ b/backend/pikpak/pikpak.go
@@ -561,6 +561,7 @@ func newFs(ctx context.Context, name, path string, m configmap.Mapper) (*Fs, err
 		if strings.Contains(err.Error(), "invalid_grant") {
 			return f, f.reAuthorize(ctx)
 		}
+		return nil, err
 	}
 
 	return f, nil