diff --git a/python/vasp/test/_inpconf/rpath.py b/python/vasp/test/_inpconf/rpath.py
index d289e092..b5d349d4 100644
--- a/python/vasp/test/_inpconf/rpath.py
+++ b/python/vasp/test/_inpconf/rpath.py
@@ -1,2 +1,5 @@
-
+r"""
+The sole role of this module is to determine the current path by
+examining rpath.__file__.
+"""
 pass