diff --git a/extras/sphinxtogithub/sphinxtogithub.py b/extras/sphinxtogithub/sphinxtogithub.py
index 8e88939ec..2f3da9058 100644
--- a/extras/sphinxtogithub/sphinxtogithub.py
+++ b/extras/sphinxtogithub/sphinxtogithub.py
@@ -97,7 +97,7 @@ class DirectoryHandler:
     def __init__(self, name, root, renamer):
         self.name = name
         self.new_name = name[1:]
-        self.root = root + os.sep
+        self.root = str(root)
         self.renamer = renamer
 
     def path(self):