diff --git a/module/obmc/wsgi/apps/rest_dbus.py b/module/obmc/wsgi/apps/rest_dbus.py
index a26532a..8df9805 100644
--- a/module/obmc/wsgi/apps/rest_dbus.py
+++ b/module/obmc/wsgi/apps/rest_dbus.py
@@ -97,7 +97,8 @@
             for dbus_method in dbus_intf.findall('method'):
                 if(dbus_method.get('name') == method):
                     for arg in dbus_method.findall('arg'):
-                        arglist.append(arg.get('type'))
+                        if (arg.get('direction') == 'in'):
+                            arglist.append(arg.get('type'))
                     return arglist