diff --git a/pypums/constants.py b/pypums/constants.py
index 27c7502..a74cff9 100644
--- a/pypums/constants.py
+++ b/pypums/constants.py
@@ -14,7 +14,7 @@
 
 __app_name__ = "pypums"
 
-app_dir = Path(get_app_dir(__app_name__))
+app_dir = Path(get_app_dir(__app_name__, force_posix=True))
 data_dir = app_dir.joinpath("data")
 data_dir.mkdir(parents=True, exist_ok=True)