diff --git a/certbot/compat/os.py b/certbot/compat/os.py
index 904532917..83de46fa3 100644
--- a/certbot/compat/os.py
+++ b/certbot/compat/os.py
@@ -36,7 +36,7 @@ del ourselves, std_os, std_sys
 # So upon file creation, security.take_ownership will be called to ensure current user is the owner
 # of the file, and security.chmod will do the same thing than for the modified os.chown.
 # Internally, take_ownership will update the existing metdata of the file, to set the current
-# username (resolved thanks to win32api module) as the owner of the file.
+# username (determined by the win32api module) as the owner of the file.
 def open(*unused_args, **unused_kwargs):  # pylint: disable=function-redefined
     """Method os.open() is forbidden"""
     raise RuntimeError('Usage of os.open() is forbidden. '  # pragma: no cover