diff --git a/render_utils.py b/render_utils.py
index f90862d..b099714 100644
--- a/render_utils.py
+++ b/render_utils.py
@@ -2,6 +2,7 @@ import re
 import os
 
 import lxml.etree
+import ox
 
 from .render_kdenlive import melt_xml