diff --git a/hplip-ui-optional.patch b/hplip-ui-optional.patch
index fa64da8..f7cbed2 100644
--- a/hplip-ui-optional.patch
+++ b/hplip-ui-optional.patch
@@ -1,6 +1,12 @@
-diff -up hplip-3.16.7/base/utils.py.ui-optional hplip-3.16.7/base/utils.py
---- hplip-3.16.7/base/utils.py.ui-optional	2016-07-15 12:12:28.000000000 +0200
-+++ hplip-3.16.7/base/utils.py	2016-08-12 10:12:24.599398769 +0200
+diff -up hplip-3.18.4/base/utils.py.ui-optional hplip-3.18.4/base/utils.py
+--- hplip-3.18.4/base/utils.py.ui-optional	2018-04-25 12:34:16.000000000 +0200
++++ hplip-3.18.4/base/utils.py	2018-04-26 09:27:26.487258888 +0200
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/python3
+ # -*- coding: utf-8 -*-
+ #
+ # (c) Copyright 2001-2015 HP Development Company, L.P.
 @@ -733,6 +733,13 @@ def checkPyQtImport(): # qt3
          if os.getenv('DISPLAY') and os.getenv('STARTED_FROM_MENU'):
              no_qt_message_gtk()
@@ -52,3 +58,19 @@ diff -up hplip-3.16.7/base/utils.py.ui-optional hplip-3.16.7/base/utils.py
              sys.exit(1)
  
  
+diff -up hplip-3.18.4/plugin.py.ui-optional hplip-3.18.4/plugin.py
+--- hplip-3.18.4/plugin.py.ui-optional	2018-05-11 10:06:02.925579534 +0200
++++ hplip-3.18.4/plugin.py	2018-05-11 10:25:08.576302069 +0200
+@@ -252,7 +252,11 @@ if mode == GUI_MODE:
+         #     clean_exit(1)
+ 
+         QApplication, ui_package = utils.import_dialog(ui_toolkit)
+-        ui = import_module(ui_package + ".plugindialog")
++        try:
++            ui = import_module(ui_package + ".plugindialog")
++        except ModuleNotFoundError:
++            log.error("hplip-gui not installed. GUI not available. Exiting.")
++            clean_exit(1)
+         if ui_toolkit == "qt5":
+             from PyQt5.QtWidgets import QMessageBox
+         elif ui_toolkit == "qt4":
diff --git a/hplip.spec b/hplip.spec
index 95430a7..848afa5 100644
--- a/hplip.spec
+++ b/hplip.spec
@@ -7,7 +7,7 @@
 Summary: HP Linux Imaging and Printing Project
 Name: hplip
 Version: 3.18.4
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv2+ and MIT and BSD
 
 Url: https://developers.hp.com/hp-linux-imaging-and-printing
@@ -525,6 +525,9 @@ rm -f %{buildroot}%{_sysconfdir}/xdg/autostart/hplip-systray.desktop
 %postun libs -p /sbin/ldconfig
 
 %changelog
+* Fri May 11 2018 Zdenek Dohnal <zdohnal@redhat.com> - 3.18.4-2
+- 1577078 - add other trap for missing gui
+
 * Thu Apr 26 2018 Zdenek Dohnal <zdohnal@redhat.com> - 3.18.4-1
 - 3.18.4