diff --git a/obmc/dbuslib/enums.py b/obmc/dbuslib/enums.py
index 910594a..e9c0e72 100644
--- a/obmc/dbuslib/enums.py
+++ b/obmc/dbuslib/enums.py
@@ -18,6 +18,7 @@
 
 DBUS_OBJMGR_IFACE = dbus.BUS_DAEMON_IFACE + '.ObjectManager'
 DBUS_UNKNOWN_INTERFACE = 'org.freedesktop.UnknownInterface'
+DBUS_UNKNOWN_SERVICE = 'org.freedesktop.DBus.Error.ServiceUnknown'
 DBUS_UNKNOWN_PROPERTY = 'org.freedesktop.DBus.Error.UnknownProperty'
 DBUS_UNKNOWN_METHOD = 'org.freedesktop.DBus.Error.UnknownMethod'
 DBUS_INVALID_ARGS = 'org.freedesktop.DBus.Error.InvalidArgs'