diff --git a/photon-lib/py/docs/source/conf.py b/photon-lib/py/docs/source/conf.py
index 3ae447750..a21c7b28c 100644
--- a/photon-lib/py/docs/source/conf.py
+++ b/photon-lib/py/docs/source/conf.py
@@ -2,7 +2,7 @@ import os
 import sys
 
 # This adds the 'py/' directory to the Python path
-sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..')))
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..")))
 
 # Configuration file for the Sphinx documentation builder.
 #