diff --git a/radicale/app/mkcalendar.py b/radicale/app/mkcalendar.py
index 53abcdbd..ccdf850c 100644
--- a/radicale/app/mkcalendar.py
+++ b/radicale/app/mkcalendar.py
@@ -62,8 +62,7 @@ class ApplicationPartMkcalendar(ApplicationBase):
             if item:
                 return self._webdav_error_response(
                     client.CONFLICT, "D:resource-must-be-null")
-            parent_path = pathutils.unstrip_path(
-                posixpath.dirname(pathutils.strip_path(path)), True)
+            parent_path = pathutils.parent_path(path)
             parent_item = next(iter(self._storage.discover(parent_path)), None)
             if not parent_item:
                 return httputils.CONFLICT