diff --git a/dbus/controller_iface_patchbay.c b/dbus/controller_iface_patchbay.c
index e89c7b3b..9adb7cfa 100644
--- a/dbus/controller_iface_patchbay.c
+++ b/dbus/controller_iface_patchbay.c
@@ -1763,7 +1763,8 @@ JACK_DBUS_METHOD_ARGUMENTS_BEGIN(DisconnectPortsByConnectionID)
 JACK_DBUS_METHOD_ARGUMENTS_END
 
 JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetClientPID)
-    JACK_DBUS_METHOD_ARGUMENT("client_id", DBUS_TYPE_INT64_AS_STRING, false)
+    JACK_DBUS_METHOD_ARGUMENT("client_id", DBUS_TYPE_UINT64_AS_STRING, false)
+    JACK_DBUS_METHOD_ARGUMENT("process_id", DBUS_TYPE_INT64_AS_STRING, true)
 JACK_DBUS_METHOD_ARGUMENTS_END
 
 JACK_DBUS_METHODS_BEGIN