From 6b010bc61c3bb1d6d109cb0a6e9ab76a37c844ee Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 26 May 2017 20:25:12 +0530
Subject: [PATCH] Fix #1693799 [Error when clicking on
 Preferences](https://bugs.launchpad.net/calibre/+bug/1693799)

I have no idea what causes this, but...
---
 src/calibre/gui2/preferences/main.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/preferences/main.py b/src/calibre/gui2/preferences/main.py
index b31940bc74..7fbcaf5b16 100644
--- a/src/calibre/gui2/preferences/main.py
+++ b/src/calibre/gui2/preferences/main.py
@@ -139,7 +139,8 @@ class Category(QWidget):  # {{{
             self.actions.append(ac)
             w = self.bar.widgetForAction(ac)
             w.setCursor(Qt.PointingHandCursor)
-            w.setAutoRaise(True)
+            if hasattr(w, 'setAutoRaise'):
+                w.setAutoRaise(True)
             w.setMinimumWidth(100)
 
     def triggered(self, plugin, *args):