diff --git a/app/abstractcontextmanageritem.h b/app/abstractcontextmanageritem.h
--- a/app/abstractcontextmanageritem.h
+++ b/app/abstractcontextmanageritem.h
@@ -35,7 +35,7 @@
     Q_OBJECT
 public:
     AbstractContextManagerItem(ContextManager*);
-    virtual ~AbstractContextManagerItem();
+    ~AbstractContextManagerItem() override;
 
     QWidget* widget() const;
 
diff --git a/app/fileopscontextmanageritem.h b/app/fileopscontextmanageritem.h
--- a/app/fileopscontextmanageritem.h
+++ b/app/fileopscontextmanageritem.h
@@ -45,7 +45,7 @@
     Q_OBJECT
 public:
     FileOpsContextManagerItem(Gwenview::ContextManager* manager, QListView* thumbnailView, KActionCollection* actionCollection, KXMLGUIClient* client);
-    ~FileOpsContextManagerItem();
+    ~FileOpsContextManagerItem() override;
 
 private Q_SLOTS:
     void updateActions();
diff --git a/app/filtercontroller.h b/app/filtercontroller.h
--- a/app/filtercontroller.h
+++ b/app/filtercontroller.h
@@ -113,7 +113,7 @@
     Q_OBJECT
 public:
     NameFilterWidget(SortedDirModel*);
-    ~NameFilterWidget();
+    ~NameFilterWidget() override;
 
 private Q_SLOTS:
     void applyNameFilter();
@@ -185,7 +185,7 @@
     Q_OBJECT
 public:
     DateFilterWidget(SortedDirModel*);
-    ~DateFilterWidget();
+    ~DateFilterWidget() override;
 
 private Q_SLOTS:
     void applyDateFilter();
@@ -255,7 +255,7 @@
     Q_OBJECT
 public:
     RatingFilterWidget(SortedDirModel*);
-    ~RatingFilterWidget();
+    ~RatingFilterWidget() override;
 
 private Q_SLOTS:
     void slotRatingChanged(int value);
@@ -318,7 +318,7 @@
     Q_OBJECT
 public:
     TagFilterWidget(SortedDirModel*);
-    ~TagFilterWidget();
+    ~TagFilterWidget() override;
 
 private Q_SLOTS:
     void updateTagSetFilter();
diff --git a/app/gvcore.h b/app/gvcore.h
--- a/app/gvcore.h
+++ b/app/gvcore.h
@@ -48,7 +48,7 @@
     Q_OBJECT
 public:
     GvCore(MainWindow* mainWindow, SortedDirModel*);
-    ~GvCore();
+    ~GvCore() override;
 
     enum PaletteType {
         NormalPalette = 0,
diff --git a/app/imageopscontextmanageritem.h b/app/imageopscontextmanageritem.h
--- a/app/imageopscontextmanageritem.h
+++ b/app/imageopscontextmanageritem.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     ImageOpsContextManagerItem(ContextManager*, MainWindow*);
-    ~ImageOpsContextManagerItem();
+    ~ImageOpsContextManagerItem() override;
 
 private Q_SLOTS:
     void updateActions();
diff --git a/app/infocontextmanageritem.h b/app/infocontextmanageritem.h
--- a/app/infocontextmanageritem.h
+++ b/app/infocontextmanageritem.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     InfoContextManagerItem(ContextManager*);
-    ~InfoContextManagerItem();
+    ~InfoContextManagerItem() override;
 
 private Q_SLOTS:
     void updateSideBarContent();
diff --git a/app/kipiexportaction.h b/app/kipiexportaction.h
--- a/app/kipiexportaction.h
+++ b/app/kipiexportaction.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit KIPIExportAction(QObject* parent);
-    ~KIPIExportAction();
+    ~KIPIExportAction() override;
 
     void setKIPIInterface(KIPIInterface*);
 
diff --git a/app/kipiimagecollectionselector.h b/app/kipiimagecollectionselector.h
--- a/app/kipiimagecollectionselector.h
+++ b/app/kipiimagecollectionselector.h
@@ -41,9 +41,9 @@
     Q_OBJECT
 public:
     KIPIImageCollectionSelector(KIPIInterface*, QWidget* parent);
-    ~KIPIImageCollectionSelector();
+    ~KIPIImageCollectionSelector() override;
 
-    virtual QList<KIPI::ImageCollection> selectedImageCollections() const;
+    QList<KIPI::ImageCollection> selectedImageCollections() const override;
 
 private:
     KIPIImageCollectionSelectorPrivate* const d;
diff --git a/app/kipiinterface.h b/app/kipiinterface.h
--- a/app/kipiinterface.h
+++ b/app/kipiinterface.h
@@ -53,27 +53,27 @@
 
 public:
     KIPIInterface(MainWindow*);
-    virtual ~KIPIInterface();
+    ~KIPIInterface() override;
 
-    KIPI::ImageCollection currentAlbum();
-    KIPI::ImageCollection currentSelection();
-    QList<KIPI::ImageCollection> allAlbums();
-    KIPI::ImageInfo info(const QUrl &url);
-    int features() const;
-    virtual bool addImage(const QUrl&, QString& err);
-    virtual void delImage(const QUrl&);
-    virtual void refreshImages(const QList<QUrl>& urls);
+    KIPI::ImageCollection currentAlbum() override;
+    KIPI::ImageCollection currentSelection() override;
+    QList<KIPI::ImageCollection> allAlbums() override;
+    KIPI::ImageInfo info(const QUrl &url) override;
+    int features() const override;
+    bool addImage(const QUrl&, QString& err) override;
+    void delImage(const QUrl&) override;
+    void refreshImages(const QList<QUrl>& urls) override;
 
-    virtual KIPI::ImageCollectionSelector* imageCollectionSelector(QWidget *parent);
-    virtual KIPI::UploadWidget* uploadWidget(QWidget *parent);
+    KIPI::ImageCollectionSelector* imageCollectionSelector(QWidget *parent) override;
+    KIPI::UploadWidget* uploadWidget(QWidget *parent) override;
 
     QList<QAction*> pluginActions(KIPI::Category) const;
 
     bool isLoadingFinished() const;
 
 #ifdef GWENVIEW_KIPI_WITH_CREATE_METHODS
-    virtual KIPI::FileReadWriteLock* createReadWriteLock(const QUrl& url) const;
-    virtual KIPI::MetadataProcessor* createMetadataProcessor() const;
+    KIPI::FileReadWriteLock* createReadWriteLock(const QUrl& url) const override;
+    KIPI::MetadataProcessor* createMetadataProcessor() const override;
 #ifdef GWENVIEW_KIPI_WITH_CREATE_RAW_PROCESSOR
     virtual KIPI::RawProcessor* createRawProcessor() const;
 #endif
@@ -105,26 +105,26 @@
         , mName(name)
         , mImages(images) {}
 
-    QString name()           {
+    QString name() override {
         return mName;
     }
-    QString comment()        {
+    QString comment() override {
         return QString();
     }
-    QList<QUrl> images()      {
+    QList<QUrl> images() override {
         return mImages;
     }
-    QUrl uploadRoot()        {
+    QUrl uploadRoot() {
         return QUrl("/");
     }
-    QUrl uploadPath()        {
+    QUrl uploadPath() {
         return mDirURL;
     }
-    QString uploadRootName()
+    QString uploadRootName() override
     {
         return "/";
     }
-    bool isDirectory()       {
+    bool isDirectory() override {
         return true;
     }
 
diff --git a/app/kipiinterface.cpp b/app/kipiinterface.cpp
--- a/app/kipiinterface.cpp
+++ b/app/kipiinterface.cpp
@@ -90,23 +90,23 @@
         }
     }
 
-    QMap<QString, QVariant> attributes() {
+    QMap<QString, QVariant> attributes() override {
         return mAttributes;
     }
 
-    void delAttributes(const QStringList& attributeNames)
+    void delAttributes(const QStringList& attributeNames) override
     {
         Q_FOREACH(const QString& name, attributeNames) {
             mAttributes.remove(name);
         }
     }
 
-    void clearAttributes()
+    void clearAttributes() override
     {
         mAttributes.clear();
     }
 
-    void addAttributes(const QVariantMap& attributes)
+    void addAttributes(const QVariantMap& attributes) override
     {
         QVariantMap::ConstIterator
             it = attributes.constBegin(),
diff --git a/app/kipiuploadwidget.h b/app/kipiuploadwidget.h
--- a/app/kipiuploadwidget.h
+++ b/app/kipiuploadwidget.h
@@ -42,7 +42,7 @@
 public:
     KIPIUploadWidget(KIPIInterface*, QWidget* parent);
 
-    virtual KIPI::ImageCollection selectedImageCollection() const;
+    KIPI::ImageCollection selectedImageCollection() const override;
 
 private:
     KIPIInterface* mInterface;
diff --git a/app/preloader.h b/app/preloader.h
--- a/app/preloader.h
+++ b/app/preloader.h
@@ -45,7 +45,7 @@
     Q_OBJECT
 public:
     explicit Preloader(QObject* parent);
-    ~Preloader();
+    ~Preloader() override;
 
     void preload(const QUrl&, const QSize&);
 
diff --git a/app/renamedialog.h b/app/renamedialog.h
--- a/app/renamedialog.h
+++ b/app/renamedialog.h
@@ -38,7 +38,7 @@
     Q_OBJECT
 public:
     explicit RenameDialog(QWidget* parent);
-    ~RenameDialog();
+    ~RenameDialog() override;
 
     void setFilename(const QString& filename);
     QString filename() const;
diff --git a/app/saveallhelper.h b/app/saveallhelper.h
--- a/app/saveallhelper.h
+++ b/app/saveallhelper.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit SaveAllHelper(QWidget* parent);
-    ~SaveAllHelper();
+    ~SaveAllHelper() override;
 
     void save();
 
diff --git a/app/savebar.h b/app/savebar.h
--- a/app/savebar.h
+++ b/app/savebar.h
@@ -40,7 +40,7 @@
     Q_OBJECT
 public:
     SaveBar(QWidget* parent, KActionCollection* collection);
-    ~SaveBar();
+    ~SaveBar() override;
 
     /**
      * Init widgets which depend on an initialized actionCollection
diff --git a/app/semanticinfocontextmanageritem.cpp b/app/semanticinfocontextmanageritem.cpp
--- a/app/semanticinfocontextmanageritem.cpp
+++ b/app/semanticinfocontextmanageritem.cpp
@@ -76,7 +76,7 @@
         KWindowConfig::restoreWindowSize(windowHandle(), configGroup());
     }
 
-    ~SemanticInfoDialog()
+    ~SemanticInfoDialog() override
     {
         KConfigGroup group = configGroup();
         KWindowConfig::saveWindowSize(windowHandle(), group);
diff --git a/app/sidebar.h b/app/sidebar.h
--- a/app/sidebar.h
+++ b/app/sidebar.h
@@ -56,7 +56,7 @@
     Q_OBJECT
 public:
     SideBarPage(const QString& title);
-    ~SideBarPage();
+    ~SideBarPage() override;
     void addWidget(QWidget*);
     void addStretch();
 
diff --git a/importer/dialogpage.h b/importer/dialogpage.h
--- a/importer/dialogpage.h
+++ b/importer/dialogpage.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit DialogPage(QWidget* parent = nullptr);
-    ~DialogPage();
+    ~DialogPage() override;
 
     void removeButtons();
     void setText(const QString&);
diff --git a/importer/documentdirfinder.h b/importer/documentdirfinder.h
--- a/importer/documentdirfinder.h
+++ b/importer/documentdirfinder.h
@@ -56,7 +56,7 @@
     };
 
     DocumentDirFinder(const QUrl& rootUrl);
-    ~DocumentDirFinder();
+    ~DocumentDirFinder() override;
 
     void start();
 
diff --git a/importer/importer.h b/importer/importer.h
--- a/importer/importer.h
+++ b/importer/importer.h
@@ -40,7 +40,7 @@
     Q_OBJECT
 public:
     explicit Importer(QWidget* authWindow);
-    ~Importer();
+    ~Importer() override;
 
     /**
      * Defines the auto-rename format applied to imported documents
diff --git a/importer/importerconfigdialog.h b/importer/importerconfigdialog.h
--- a/importer/importerconfigdialog.h
+++ b/importer/importerconfigdialog.h
@@ -37,7 +37,7 @@
     Q_OBJECT
 public:
     explicit ImporterConfigDialog(QWidget*);
-    ~ImporterConfigDialog();
+    ~ImporterConfigDialog() override;
 
 private Q_SLOTS:
     void slotHelpLinkActivated(const QString& keyword);
diff --git a/importer/progresspage.h b/importer/progresspage.h
--- a/importer/progresspage.h
+++ b/importer/progresspage.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit ProgressPage(Importer*);
-    ~ProgressPage();
+    ~ProgressPage() override;
 
 private:
     ProgressPagePrivate* const d;
diff --git a/importer/thumbnailpage.h b/importer/thumbnailpage.h
--- a/importer/thumbnailpage.h
+++ b/importer/thumbnailpage.h
@@ -40,7 +40,7 @@
     Q_OBJECT
 public:
     ThumbnailPage();
-    ~ThumbnailPage();
+    ~ThumbnailPage() override;
 
     /**
      * Returns the list of urls to import
diff --git a/lib/abstractimageoperation.h b/lib/abstractimageoperation.h
--- a/lib/abstractimageoperation.h
+++ b/lib/abstractimageoperation.h
@@ -53,7 +53,7 @@
     Q_OBJECT
 public:
     AbstractImageOperation();
-    virtual ~AbstractImageOperation();
+    ~AbstractImageOperation() override;
 
     void applyToDocument(Document::Ptr);
     Document::Ptr document() const;
diff --git a/lib/abstractimageoperation.cpp b/lib/abstractimageoperation.cpp
--- a/lib/abstractimageoperation.cpp
+++ b/lib/abstractimageoperation.cpp
@@ -42,7 +42,7 @@
         : mOp(op)
     {}
 
-    ~ImageOperationCommand()
+    ~ImageOperationCommand() override
     {
         delete mOp;
     }
diff --git a/lib/binder.h b/lib/binder.h
--- a/lib/binder.h
+++ b/lib/binder.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit BinderInternal(QObject* parent);
-    ~BinderInternal();
+    ~BinderInternal() override;
 
 protected Q_SLOTS:
     virtual void callMethod()
diff --git a/lib/contextmanager.h b/lib/contextmanager.h
--- a/lib/contextmanager.h
+++ b/lib/contextmanager.h
@@ -49,7 +49,7 @@
 public:
     ContextManager(SortedDirModel*, QObject* parent);
 
-    ~ContextManager();
+    ~ContextManager() override;
 
     void loadConfig();
     void saveConfig() const;
diff --git a/lib/crop/cropimageoperation.h b/lib/crop/cropimageoperation.h
--- a/lib/crop/cropimageoperation.h
+++ b/lib/crop/cropimageoperation.h
@@ -40,7 +40,7 @@
 {
 public:
     CropImageOperation(const QRect&);
-    ~CropImageOperation();
+    ~CropImageOperation() override;
 
     void redo() override;
     void undo() override;
diff --git a/lib/crop/cropwidget.h b/lib/crop/cropwidget.h
--- a/lib/crop/cropwidget.h
+++ b/lib/crop/cropwidget.h
@@ -43,7 +43,7 @@
     Q_OBJECT
 public:
     CropWidget(QWidget* parent, RasterImageView*, CropTool*);
-    ~CropWidget();
+    ~CropWidget() override;
 
     void setAdvancedSettingsEnabled(bool enable);
     bool advancedSettingsEnabled() const;
diff --git a/lib/datewidget.h b/lib/datewidget.h
--- a/lib/datewidget.h
+++ b/lib/datewidget.h
@@ -41,7 +41,7 @@
     Q_OBJECT
 public:
     explicit DateWidget(QWidget* parent = nullptr);
-    ~DateWidget();
+    ~DateWidget() override;
 
     QDate date() const;
 
diff --git a/lib/document/abstractdocumentimpl.h b/lib/document/abstractdocumentimpl.h
--- a/lib/document/abstractdocumentimpl.h
+++ b/lib/document/abstractdocumentimpl.h
@@ -47,7 +47,7 @@
     Q_OBJECT
 public:
     AbstractDocumentImpl(Document*);
-    virtual ~AbstractDocumentImpl();
+    ~AbstractDocumentImpl() override;
 
     /**
      * This method is called by Document::switchToImpl after it has connected
diff --git a/lib/document/document.h b/lib/document/document.h
--- a/lib/document/document.h
+++ b/lib/document/document.h
@@ -88,7 +88,7 @@
     };
 
     typedef QExplicitlySharedDataPointer<Document> Ptr;
-    ~Document();
+    ~Document() override;
 
     /**
      * Returns a message for the last error which happened
diff --git a/lib/document/documentfactory.h b/lib/document/documentfactory.h
--- a/lib/document/documentfactory.h
+++ b/lib/document/documentfactory.h
@@ -46,7 +46,7 @@
     Q_OBJECT
 public:
     static DocumentFactory* instance();
-    ~DocumentFactory();
+    ~DocumentFactory() override;
 
     /**
      * Loads the document associated with url, or returns an already cached
diff --git a/lib/documentview/abstractdocumentviewadapter.h b/lib/documentview/abstractdocumentviewadapter.h
--- a/lib/documentview/abstractdocumentviewadapter.h
+++ b/lib/documentview/abstractdocumentviewadapter.h
@@ -51,7 +51,7 @@
     Q_OBJECT
 public:
     AbstractDocumentViewAdapter();
-    virtual ~AbstractDocumentViewAdapter();
+    ~AbstractDocumentViewAdapter() override;
 
     QGraphicsWidget* widget() const
     {
diff --git a/lib/documentview/abstractrasterimageviewtool.h b/lib/documentview/abstractrasterimageviewtool.h
--- a/lib/documentview/abstractrasterimageviewtool.h
+++ b/lib/documentview/abstractrasterimageviewtool.h
@@ -47,7 +47,7 @@
     Q_OBJECT
 public:
     AbstractRasterImageViewTool(RasterImageView* view);
-    virtual ~AbstractRasterImageViewTool();
+    ~AbstractRasterImageViewTool() override;
 
     RasterImageView* imageView() const;
 
diff --git a/lib/documentview/documentviewcontroller.h b/lib/documentview/documentviewcontroller.h
--- a/lib/documentview/documentviewcontroller.h
+++ b/lib/documentview/documentviewcontroller.h
@@ -50,7 +50,7 @@
     Q_OBJECT
 public:
     explicit DocumentViewController(KActionCollection*, QObject* parent = nullptr);
-    ~DocumentViewController();
+    ~DocumentViewController() override;
 
     DocumentView* view() const;
     ZoomWidget* zoomWidget() const;
diff --git a/lib/documentview/documentviewsynchronizer.h b/lib/documentview/documentviewsynchronizer.h
--- a/lib/documentview/documentviewsynchronizer.h
+++ b/lib/documentview/documentviewsynchronizer.h
@@ -47,7 +47,7 @@
     // We pass a pointer to the view list because we don't want to maintain
     // a copy of the list itself
     explicit DocumentViewSynchronizer(const QList<DocumentView*>* views, QObject* parent = nullptr);
-    ~DocumentViewSynchronizer();
+    ~DocumentViewSynchronizer() override;
 
     void setCurrentView(DocumentView* view);
 
diff --git a/lib/documentview/rasterimageviewadapter.h b/lib/documentview/rasterimageviewadapter.h
--- a/lib/documentview/rasterimageviewadapter.h
+++ b/lib/documentview/rasterimageviewadapter.h
@@ -78,7 +78,7 @@
     void loadConfig() override;
 
     RasterImageView* rasterImageView() const override;
-    virtual AbstractImageView* imageView() const override;
+    AbstractImageView* imageView() const override;
 
     QPointF scrollPos() const override;
     void setScrollPos(const QPointF& pos) override;
diff --git a/lib/documentview/svgviewadapter.h b/lib/documentview/svgviewadapter.h
--- a/lib/documentview/svgviewadapter.h
+++ b/lib/documentview/svgviewadapter.h
@@ -71,7 +71,7 @@
     Q_OBJECT
 public:
     SvgViewAdapter();
-    ~SvgViewAdapter();
+    ~SvgViewAdapter() override;
 
     QCursor cursor() const override;
 
@@ -112,9 +112,9 @@
     QPointF scrollPos() const override;
     void setScrollPos(const QPointF& pos) override;
 
-    virtual QRectF visibleDocumentRect() const override;
+    QRectF visibleDocumentRect() const override;
 
-    virtual AbstractImageView* imageView() const override;
+    AbstractImageView* imageView() const override;
 
 private:
     SvgViewAdapterPrivate* const d;
diff --git a/lib/hud/hudmessagebubble.h b/lib/hud/hudmessagebubble.h
--- a/lib/hud/hudmessagebubble.h
+++ b/lib/hud/hudmessagebubble.h
@@ -46,7 +46,7 @@
     Q_OBJECT
 public:
     explicit HudMessageBubble(QGraphicsWidget* parent = nullptr);
-    ~HudMessageBubble();
+    ~HudMessageBubble() override;
 
     void setText(const QString& text);
 
diff --git a/lib/imagescaler.h b/lib/imagescaler.h
--- a/lib/imagescaler.h
+++ b/lib/imagescaler.h
@@ -44,7 +44,7 @@
     Q_OBJECT
 public:
     explicit ImageScaler(QObject* parent = nullptr);
-    ~ImageScaler();
+    ~ImageScaler() override;
     void setDocument(Document::Ptr);
     void setZoom(qreal);
     void setDestinationRegion(const QRegion&);
diff --git a/lib/invisiblebuttongroup.h b/lib/invisiblebuttongroup.h
--- a/lib/invisiblebuttongroup.h
+++ b/lib/invisiblebuttongroup.h
@@ -81,7 +81,7 @@
     Q_PROPERTY(int current READ selected WRITE setSelected)
 public:
     explicit InvisibleButtonGroup(QWidget* parent = nullptr);
-    ~InvisibleButtonGroup();
+    ~InvisibleButtonGroup() override;
 
     int selected() const;
 
diff --git a/lib/print/printoptionspage.h b/lib/print/printoptionspage.h
--- a/lib/print/printoptionspage.h
+++ b/lib/print/printoptionspage.h
@@ -50,7 +50,7 @@
     };
 
     PrintOptionsPage(const QSize& imageSize);
-    ~PrintOptionsPage();
+    ~PrintOptionsPage() override;
 
     Qt::Alignment alignment() const;
     ScaleMode scaleMode() const;
diff --git a/lib/resize/resizeimagedialog.h b/lib/resize/resizeimagedialog.h
--- a/lib/resize/resizeimagedialog.h
+++ b/lib/resize/resizeimagedialog.h
@@ -39,7 +39,7 @@
     Q_OBJECT
 public:
     explicit ResizeImageDialog(QWidget *parent);
-    ~ResizeImageDialog();
+    ~ResizeImageDialog() override;
 
     void setOriginalSize(const QSize&);
     QSize size() const;
diff --git a/lib/semanticinfo/semanticinfodirmodel.h b/lib/semanticinfo/semanticinfodirmodel.h
--- a/lib/semanticinfo/semanticinfodirmodel.h
+++ b/lib/semanticinfo/semanticinfodirmodel.h
@@ -50,7 +50,7 @@
         TagsRole = 0x0462F0A8
     };
     SemanticInfoDirModel(QObject* parent);
-    ~SemanticInfoDirModel();
+    ~SemanticInfoDirModel() override;
 
     void clearSemanticInfoCache();
 
diff --git a/lib/semanticinfo/sorteddirmodel.h b/lib/semanticinfo/sorteddirmodel.h
--- a/lib/semanticinfo/sorteddirmodel.h
+++ b/lib/semanticinfo/sorteddirmodel.h
@@ -51,7 +51,7 @@
 {
 public:
     AbstractSortedDirModelFilter(SortedDirModel* model);
-    ~AbstractSortedDirModelFilter();
+    ~AbstractSortedDirModelFilter() override;
     SortedDirModel* model() const
     {
         return mModel;
diff --git a/lib/semanticinfo/tagitemdelegate.h b/lib/semanticinfo/tagitemdelegate.h
--- a/lib/semanticinfo/tagitemdelegate.h
+++ b/lib/semanticinfo/tagitemdelegate.h
@@ -38,15 +38,15 @@
 protected:
     QList<QWidget*> createItemWidgets(const QModelIndex &index) const override;
 
-    virtual void updateItemWidgets(const QList<QWidget*> widgets,
-                                   const QStyleOptionViewItem& option,
-                                   const QPersistentModelIndex& /*index*/) const override;
+    void updateItemWidgets(const QList<QWidget*> widgets,
+                           const QStyleOptionViewItem& option,
+                           const QPersistentModelIndex& /*index*/) const override;
 
-    virtual void paint(QPainter *painter, const QStyleOptionViewItem &option,
-                       const QModelIndex &index) const override;
+    void paint(QPainter *painter, const QStyleOptionViewItem &option,
+               const QModelIndex &index) const override;
 
-    virtual QSize sizeHint(const QStyleOptionViewItem &/*option*/,
-                           const QModelIndex &/*index*/) const override;
+    QSize sizeHint(const QStyleOptionViewItem &/*option*/,
+                   const QModelIndex &/*index*/) const override;
 
 Q_SIGNALS:
     void removeTagRequested(const SemanticInfoTag& tag);
diff --git a/lib/semanticinfo/tagmodel.h b/lib/semanticinfo/tagmodel.h
--- a/lib/semanticinfo/tagmodel.h
+++ b/lib/semanticinfo/tagmodel.h
@@ -44,7 +44,7 @@
     Q_OBJECT
 public:
     explicit TagModel(QObject*);
-    ~TagModel();
+    ~TagModel() override;
 
     enum {
         TagRole = Qt::UserRole,
diff --git a/lib/semanticinfo/tagwidget.h b/lib/semanticinfo/tagwidget.h
--- a/lib/semanticinfo/tagwidget.h
+++ b/lib/semanticinfo/tagwidget.h
@@ -43,7 +43,7 @@
     Q_OBJECT
 public:
     explicit TagWidget(QWidget* parent = nullptr);
-    ~TagWidget();
+    ~TagWidget() override;
     void setTagInfo(const TagInfo&);
     void setSemanticInfoBackEnd(AbstractSemanticInfoBackEnd*);
 
diff --git a/lib/slideshow.h b/lib/slideshow.h
--- a/lib/slideshow.h
+++ b/lib/slideshow.h
@@ -40,7 +40,7 @@
     Q_OBJECT
 public:
     explicit SlideShow(QObject* parent);
-    virtual ~SlideShow();
+    ~SlideShow() override;
 
     void start(const QList<QUrl>& urls);
     void pause();
diff --git a/lib/thumbnailview/abstractthumbnailviewhelper.h b/lib/thumbnailview/abstractthumbnailviewhelper.h
--- a/lib/thumbnailview/abstractthumbnailviewhelper.h
+++ b/lib/thumbnailview/abstractthumbnailviewhelper.h
@@ -41,7 +41,7 @@
     Q_OBJECT
 public:
     explicit AbstractThumbnailViewHelper(QObject* parent);
-    virtual ~AbstractThumbnailViewHelper();
+    ~AbstractThumbnailViewHelper() override;
 
     virtual void showContextMenu(QWidget* parent) = 0;
 
diff --git a/lib/thumbnailview/previewitemdelegate.h b/lib/thumbnailview/previewitemdelegate.h
--- a/lib/thumbnailview/previewitemdelegate.h
+++ b/lib/thumbnailview/previewitemdelegate.h
@@ -48,7 +48,7 @@
     Q_OBJECT
 public:
     PreviewItemDelegate(ThumbnailView*);
-    ~PreviewItemDelegate();
+    ~PreviewItemDelegate() override;
 
     enum ContextBarAction {
         NoAction         = 0,
diff --git a/lib/thumbnailview/thumbnailbarview.h b/lib/thumbnailview/thumbnailbarview.h
--- a/lib/thumbnailview/thumbnailbarview.h
+++ b/lib/thumbnailview/thumbnailbarview.h
@@ -64,7 +64,7 @@
     Q_OBJECT
 public:
     ThumbnailBarView(QWidget* = 0);
-    ~ThumbnailBarView();
+    ~ThumbnailBarView() override;
 
     Qt::Orientation orientation() const;
     void setOrientation(Qt::Orientation);
diff --git a/lib/thumbnailview/thumbnailslider.h b/lib/thumbnailview/thumbnailslider.h
--- a/lib/thumbnailview/thumbnailslider.h
+++ b/lib/thumbnailview/thumbnailslider.h
@@ -43,7 +43,7 @@
     Q_OBJECT
 public:
     explicit ThumbnailSlider(QWidget* parent = nullptr);
-    ~ThumbnailSlider();
+    ~ThumbnailSlider() override;
 
     void updateToolTip();
 
diff --git a/lib/thumbnailview/thumbnailview.h b/lib/thumbnailview/thumbnailview.h
--- a/lib/thumbnailview/thumbnailview.h
+++ b/lib/thumbnailview/thumbnailview.h
@@ -180,8 +180,8 @@
     void rowsAboutToBeRemoved(const QModelIndex& parent, int start, int end) override;
     void rowsInserted(const QModelIndex& parent, int start, int end) override;
     void selectionChanged(const QItemSelection& selected, const QItemSelection& deselected) override;
-    virtual void dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight,
-                             const QVector<int> &roles = QVector<int>()) override;
+    void dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight,
+                     const QVector<int> &roles = QVector<int>()) override;
 
 private Q_SLOTS:
     void showContextMenu();
diff --git a/lib/zoomslider.h b/lib/zoomslider.h
--- a/lib/zoomslider.h
+++ b/lib/zoomslider.h
@@ -48,7 +48,7 @@
     Q_OBJECT
 public:
     explicit ZoomSlider(QWidget* parent = nullptr);
-    ~ZoomSlider();
+    ~ZoomSlider() override;
 
     int value() const;
 
diff --git a/lib/zoomwidget.h b/lib/zoomwidget.h
--- a/lib/zoomwidget.h
+++ b/lib/zoomwidget.h
@@ -41,7 +41,7 @@
     Q_OBJECT
 public:
     explicit ZoomWidget(QWidget* parent = nullptr);
-    ~ZoomWidget();
+    ~ZoomWidget() override;
 
     void setActions(QAction* zoomToFitAction, QAction* actualSizeAction, QAction* zoomInAction, QAction* zoomOutAction, QAction* zoomToFillAction);
 
diff --git a/part/gvbrowserextension.h b/part/gvbrowserextension.h
--- a/part/gvbrowserextension.h
+++ b/part/gvbrowserextension.h
@@ -37,7 +37,7 @@
     Q_OBJECT
 public:
     GVBrowserExtension(KParts::ReadOnlyPart*);
-    ~GVBrowserExtension();
+    ~GVBrowserExtension() override;
 
 private Q_SLOTS:
     void print();
diff --git a/tests/auto/documenttest.cpp b/tests/auto/documenttest.cpp
--- a/tests/auto/documenttest.cpp
+++ b/tests/auto/documenttest.cpp
@@ -499,7 +499,7 @@
     class TestOperation : public AbstractImageOperation
     {
     public:
-        void redo()
+        void redo() override
     {
             QImage image(10, 10, QImage::Format_ARGB32);
             image.fill(QColor(Qt::white).rgb());
@@ -676,7 +676,7 @@
     {}
 
 protected:
-    virtual void doStart()
+    void doStart() override
     {
         *mStr += mCh;
         emitResult();
@@ -723,7 +723,7 @@
     }
 
 protected:
-    virtual void doStart()
+    void doStart() override
     {
         document()->waitUntilLoaded();
         *mHasEditor = checkDocumentEditor() ? 1 : 0;
@@ -744,7 +744,7 @@
         *mShowErrorMessageCalled = false;
     }
 
-    virtual void showErrorMessage()
+    void showErrorMessage() override
     {
         //qDebug();
         *mShowErrorMessageCalled = true;
@@ -795,16 +795,16 @@
     class SuccessOperation : public AbstractImageOperation
     {
     protected:
-        virtual void redo()
+        void redo() override
     {
             QMetaObject::invokeMethod(this, "finish", Qt::QueuedConnection, Q_ARG(bool, true));
         }
     };
 
     class FailureOperation : public AbstractImageOperation
     {
     protected:
-        virtual void redo()
+        void redo() override
     {
             QMetaObject::invokeMethod(this, "finish", Qt::QueuedConnection, Q_ARG(bool, false));
         }
@@ -839,13 +839,13 @@
         int mUndoCount = 0;
 
     protected:
-        virtual void redo()
+        void redo() override
         {
             mRedoCount++;
             finish(true);
         }
 
-        virtual void undo()
+        void undo() override
         {
             mUndoCount++;
             finish(true);