--- a/controls/FolderTree.py	Wed Aug 16 17:27:58 2017 +0300
+++ b/controls/FolderTree.py	Thu Aug 17 09:55:39 2017 +0300
@@ -215,7 +215,7 @@
                     os.rename(old_filepath, new_filepath)
                     event.Skip()
                 else:
-                    message =  wx.MessageDialog(self,
+                    message = wx.MessageDialog(self,
                         _("File '%s' already exists!") % new_name,
                         _("Error"), wx.OK | wx.ICON_ERROR)
                     message.ShowModal()