diff --git a/obmc/mapper/bindings.py b/obmc/mapper/bindings.py
index e61a39c..d436bb3 100644
--- a/obmc/mapper/bindings.py
+++ b/obmc/mapper/bindings.py
@@ -82,7 +82,7 @@
             return f(*a)
         except dbus.exceptions.DBusException, e:
             if obmc.dbuslib.enums.DBUS_UNKNOWN_INTERFACE in \
-                    e.get_dbus_message():
+                    e.get_dbus_name():
                 # interface doesn't have any properties
                 return None
             if obmc.dbuslib.enums.DBUS_UNKNOWN_METHOD == e.get_dbus_name():