diff --git a/docs/guide/conf.py b/docs/guide/conf.py
index 465fd151d..6a9193246 100644
--- a/docs/guide/conf.py
+++ b/docs/guide/conf.py
@@ -28,9 +28,11 @@ def get_vlt_version():
                 return match.group(1)
     return "unknown"
 
+
 def setup(app):
     app.add_css_file('css/vlt_sphinx.css')
 
+
 # ----------------------------------------------------------------------
 # -- Project information