diff --git a/module/obmc/wsgi/apps/rest_dbus.py b/module/obmc/wsgi/apps/rest_dbus.py
index b47ea4e..0ea921e 100644
--- a/module/obmc/wsgi/apps/rest_dbus.py
+++ b/module/obmc/wsgi/apps/rest_dbus.py
@@ -40,8 +40,7 @@
     import gobject
     import gevent
 
-DBUS_UNKNOWN_INTERFACE = 'org.freedesktop.UnknownInterface'
-DBUS_UNKNOWN_INTERFACE_ERROR = 'org.freedesktop.DBus.Error.UnknownInterface'
+DBUS_UNKNOWN_INTERFACE = 'org.freedesktop.DBus.Error.UnknownInterface'
 DBUS_UNKNOWN_METHOD = 'org.freedesktop.DBus.Error.UnknownMethod'
 DBUS_INVALID_ARGS = 'org.freedesktop.DBus.Error.InvalidArgs'
 DBUS_TYPE_ERROR = 'org.freedesktop.DBus.Python.TypeError'
@@ -244,10 +243,7 @@
         try:
             return f(*a)
         except dbus.exceptions.DBusException, e:
-            if DBUS_UNKNOWN_INTERFACE in e.get_dbus_message():
-                # interface doesn't have any properties
-                return None
-            if DBUS_UNKNOWN_INTERFACE_ERROR in e.get_dbus_name():
+            if DBUS_UNKNOWN_INTERFACE in e.get_dbus_name():
                 # interface doesn't have any properties
                 return None
             if DBUS_UNKNOWN_METHOD == e.get_dbus_name():