diff --git a/tests/test_utils_pv.py b/tests/test_utils_pv.py
index 0b8be11e4..65c1f2b89 100644
--- a/tests/test_utils_pv.py
+++ b/tests/test_utils_pv.py
@@ -9,7 +9,8 @@ import colorama
 from slic.utils.pv import PV
 print("PV backend:", type(PV))
 import logging
-logging.warning("PV class origin: %s", pv.PV)
+logging.warning("PV MRO: %s", PV.__mro__)
+
 
 '''