diff --git a/hy_base/odoo.hy b/hy_base/odoo.hy
index 87b9522..40d334d 100644
--- a/hy_base/odoo.hy
+++ b/hy_base/odoo.hy
@@ -54,7 +54,7 @@
   "Write XML file according to filename and given tree"
   `(do
      (import [os [path]])
-     (setv ~g!output-xml (.tostring ET tree)
+     (setv ~g!output-xml (.tostring ET ~tree)
            ~g!output-path (.dirname path (.abspath path __file__))
-           ~g!fpath (+ ~g!output-path "/" ~g!filename))
+           ~g!fpath (+ ~g!output-path "/" ~filename))
       (with [f (open ~g!fpath "w")] (.write f ~g!output-xml))))