diff --git a/dev_tools/docs/xsd_units.py b/dev_tools/docs/xsd_units.py
index 63d7714289..8306a6fa9f 100644
--- a/dev_tools/docs/xsd_units.py
+++ b/dev_tools/docs/xsd_units.py
@@ -5,7 +5,6 @@
 the NXDL chapter.
 """
 
-
 from pathlib import Path
 from typing import List