diff --git a/utilities/maintenance/thumbsgenerator.cpp b/utilities/maintenance/thumbsgenerator.cpp
index eaa02da96e..734d9e1742 100644
--- a/utilities/maintenance/thumbsgenerator.cpp
+++ b/utilities/maintenance/thumbsgenerator.cpp
@@ -1,202 +1,203 @@
 /* ============================================================
  *
  * This file is a part of digiKam project
  * http://www.digikam.org
  *
  * Date        : 2006-30-08
  * Description : batch thumbnails generator
  *
  * Copyright (C) 2006-2018 by Gilles Caulier <caulier dot gilles at gmail dot com>
  * Copyright (C) 2012      by Andi Clemens <andi dot clemens at gmail dot com>
  *
  * 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, or (at your option)
  * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * ============================================================ */
 
 #include "thumbsgenerator.h"
 
 // Qt includes
 
 #include <QString>
 #include <QTimer>
 #include <QDir>
 #include <QFileInfo>
 #include <QPixmap>
 
 // KDE includes
 
 #include <klocalizedstring.h>
 
 // Local includes
 
 #include "coredb.h"
 #include "coredbalbuminfo.h"
 #include "albummanager.h"
 #include "applicationsettings.h"
 #include "coredbaccess.h"
 #include "imageinfo.h"
 #include "thumbsdbaccess.h"
 #include "thumbsdb.h"
 #include "maintenancethread.h"
 #include "digikam_config.h"
 
 namespace Digikam
 {
 
 class ThumbsGenerator::Private
 {
 public:
 
     Private() :
         rebuildAll(true),
         thread(0)
     {
     }
 
     bool               rebuildAll;
 
     AlbumList          albumList;
 
     QStringList        allPicturesPath;
 
     MaintenanceThread* thread;
 };
 
 ThumbsGenerator::ThumbsGenerator(const bool rebuildAll, const AlbumList& list, ProgressItem* const parent)
     : MaintenanceTool(QLatin1String("ThumbsGenerator"), parent),
       d(new Private)
 {
     d->albumList = list;
     init(rebuildAll);
 }
 
 ThumbsGenerator::ThumbsGenerator(const bool rebuildAll, int albumId, ProgressItem* const parent)
     : MaintenanceTool(QLatin1String("ThumbsGenerator"), parent),
       d(new Private)
 {
     d->albumList.append(AlbumManager::instance()->findPAlbum(albumId));
     init(rebuildAll);
 }
 
 ThumbsGenerator::~ThumbsGenerator()
 {
     delete d;
 }
 
 void ThumbsGenerator::init(const bool rebuildAll)
 {
     setLabel(i18n("Thumbs"));
     ProgressManager::addProgressItem(this);
 
     d->rebuildAll = rebuildAll;
     d->thread     = new MaintenanceThread(this);
 
     connect(d->thread, SIGNAL(signalCompleted()),
             this, SLOT(slotDone()));
 
     connect(d->thread, SIGNAL(signalAdvance(QImage)),
             this, SLOT(slotAdvance(QImage)));
 }
 
 void ThumbsGenerator::setUseMultiCoreCPU(bool b)
 {
     d->thread->setUseMultiCore(b);
 }
 
 void ThumbsGenerator::slotCancel()
 {
     d->thread->cancel();
     MaintenanceTool::slotCancel();
 }
 
 void ThumbsGenerator::slotStart()
 {
     MaintenanceTool::slotStart();
 
     if (d->albumList.isEmpty())
     {
         d->albumList = AlbumManager::instance()->allPAlbums();
     }
 
     for (AlbumList::const_iterator it = d->albumList.constBegin();
          !canceled() && (it != d->albumList.constEnd()); ++it)
     {
         if (!(*it))
         {
             continue;
         }
 
         if ((*it)->type() == Album::PHYSICAL)
         {
             d->allPicturesPath += CoreDbAccess().db()->getItemURLsInAlbum((*it)->id());
         }
         else if ((*it)->type() == Album::TAG)
         {
             d->allPicturesPath += CoreDbAccess().db()->getItemURLsInTag((*it)->id());
         }
     }
 
     if (!d->rebuildAll)
     {
         QHash<QString, int> filePaths = ThumbsDbAccess().db()->getFilePathsWithThumbnail();
         QStringList::iterator it      = d->allPicturesPath.begin();
 
         while (it != d->allPicturesPath.end())
         {
             if (filePaths.contains(*it))
             {
                 it = d->allPicturesPath.erase(it);
             }
             else
             {
                 ++it;
             }
         }
     }
 
     // remove non-image or video files from the list
     QStringList::iterator it = d->allPicturesPath.begin();
 
     while (it != d->allPicturesPath.end())
     {
         ImageInfo info = ImageInfo::fromLocalFile(*it);
 
         if (info.category() != DatabaseItem::Image &&
-            info.category() != DatabaseItem::Video)
+            info.category() != DatabaseItem::Video &&
+            info.category() != DatabaseItem::Audio)
         {
             it = d->allPicturesPath.erase(it);
         }
         else
         {
             ++it;
         }
     }
 
     if (d->allPicturesPath.isEmpty())
     {
         slotDone();
         return;
     }
 
     setTotalItems(d->allPicturesPath.count());
 
     d->thread->generateThumbs(d->allPicturesPath);
     d->thread->start();
 }
 
 void ThumbsGenerator::slotAdvance(const QImage& img)
 {
     setThumbnail(QPixmap::fromImage(img));
     advance(1);
 }
 
 }  // namespace Digikam