diff --git a/pystatemgr/discover_system_state.py b/pystatemgr/discover_system_state.py
index ca49867..cc2ae10 100644
--- a/pystatemgr/discover_system_state.py
+++ b/pystatemgr/discover_system_state.py
@@ -42,7 +42,7 @@
     'powersupplyredundancy': {
         'bus_name': 'org.openbmc.Sensors',
         'object_name': '/org/openbmc/sensors/host/PowerSupplyRedundancy',
-        'interface_name': 'org.freedesktop.DBus.Properties'
+        'interface_name': 'org.openbmc.SensorValue'
     },
     'turboallowed': {
         'bus_name': 'org.openbmc.Sensors',