From 95a73bbc9bd65602a0f9411469ab511bc80a01d0 Mon Sep 17 00:00:00 2001
From: Till Kamppeter <till.kamppeter@gmail.com>
Date: Wed, 3 Oct 2018 15:13:00 +0200
Subject: Call QMessageBox constructors of PyQT5 with the correct parameters
Bug-Debian: https://bugs.debian.org/912768
Bug-Ubuntu: https://bugs.launchpad.net/bugs/1745383

Index: ui/printerform.py
--- ui/printerform.py.orig
+++ ui/printerform.py
@@ -154,7 +154,7 @@ class PrinterForm(QMainWindow):
         QMessageBox.critical(self,
                              self.caption(),
                              error_text,
-                              QMessageBox.Ok,
+                              QMessageBox.Ok |\
                               QMessageBox.NoButton,
                               QMessageBox.NoButton)
 
