diff --git a/soundfactory.h b/soundfactory.h
index 34b38b6..36dcd55 100644
--- a/soundfactory.h
+++ b/soundfactory.h
@@ -1,53 +1,55 @@
 /***************************************************************************
  *   Copyright (C) 1999-2006 by Éric Bischoff <ebischoff@nerim.net>        *
  *   Copyright (C) 2007 by Albert Astals Cid <aacid@kde.org>               *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  ***************************************************************************/
 
 /* Sound factory */
 
 #ifndef _SOUNDFACTORY_H_
 #define _SOUNDFACTORY_H_
 
 #include <QStringList>
 
 class QMediaPlayer;
 
 class SoundFactoryCallbacks
 {
 public:
   virtual ~SoundFactoryCallbacks() {};
   virtual bool isSoundEnabled() const = 0;
   virtual void registerLanguage(const QString &code, const QString &soundFile, bool enabled) = 0;
 };
 
 class SoundFactory
 {
 public:
   explicit SoundFactory(SoundFactoryCallbacks *callbacks);
   ~SoundFactory();
+  SoundFactory(const SoundFactory &) = delete;
+  SoundFactory &operator=(const SoundFactory &) = delete;
 
   bool loadLanguage(const QString &selectedLanguageFile);
   void playSound(const QString &soundRef) const;
 
   QString currentSoundFile() const;
 
   void registerLanguages();
 
 private:
   SoundFactoryCallbacks *m_callbacks;
 
   QString currentSndFile;		// The current language
 
   int sounds;				// Number of sounds
   QStringList namesList,		// List of sound names
               filesList;           // List of sound files associated with each sound name
 
   QMediaPlayer *player;
 };
 
 #endif