diff --git a/gui/builtinPreferenceViews/pyfaGeneralPreferences.py b/gui/builtinPreferenceViews/pyfaGeneralPreferences.py
index 8615f7e2f..96a8696d1 100644
--- a/gui/builtinPreferenceViews/pyfaGeneralPreferences.py
+++ b/gui/builtinPreferenceViews/pyfaGeneralPreferences.py
@@ -1,18 +1,16 @@
 # noinspection PyPackageRequirements
 import wx
-from wx.lib.intctrl import IntCtrl
 
-from gui.preferenceView import PreferenceView
-from gui.bitmap_loader import BitmapLoader
-
-import gui.mainFrame
 import gui.globalEvents as GE
-from service.settings import SettingsProvider
+import gui.mainFrame
+from gui.bitmap_loader import BitmapLoader
+from gui.preferenceView import PreferenceView
 from service.fit import Fit
-from service.price import Price
+from service.settings import SettingsProvider
 
 
 class PFGeneralPref(PreferenceView):
+
     title = "General"
 
     def populatePanel(self, panel):
diff --git a/gui/builtinShipBrowser/pfListPane.py b/gui/builtinShipBrowser/pfListPane.py
index 60a303b3a..6b00e221f 100644
--- a/gui/builtinShipBrowser/pfListPane.py
+++ b/gui/builtinShipBrowser/pfListPane.py
@@ -22,6 +22,7 @@ import wx
 
 
 class PFListPane(wx.ScrolledWindow):
+
     def __init__(self, parent):
         wx.ScrolledWindow.__init__(self, parent, pos=wx.DefaultPosition, style=wx.TAB_TRAVERSAL)
 
diff --git a/gui/preferenceDialog.py b/gui/preferenceDialog.py
index 28b0a024a..382dc0441 100644
--- a/gui/preferenceDialog.py
+++ b/gui/preferenceDialog.py
@@ -57,7 +57,7 @@ class PreferenceDialog(wx.Dialog):
 
         for prefView in PreferenceView.views:
             page = wx.ScrolledWindow(self.listbook)
-            page.SetScrollbars(1, 1, 20, 20)
+            page.SetScrollRate(15, 15)
             bmp = prefView.getImage()
             if bmp:
                 imgID = self.imageList.Add(bmp)
diff --git a/gui/preferenceView.py b/gui/preferenceView.py
index 0ee6230f5..0e5f8b369 100644
--- a/gui/preferenceView.py
+++ b/gui/preferenceView.py
@@ -21,7 +21,7 @@
 import wx
 
 
-class PreferenceView(object):
+class PreferenceView:
     views = []
 
     @classmethod