diff --git a/src/declarativeimports/core/datamodel.h b/src/declarativeimports/core/datamodel.h
index f48c4087e..ff61b4300 100644
--- a/src/declarativeimports/core/datamodel.h
+++ b/src/declarativeimports/core/datamodel.h
@@ -91,7 +91,7 @@ class SortFilterModel : public QSortFilterProxyModel
 
 public:
     explicit SortFilterModel(QObject *parent = nullptr);
-    ~SortFilterModel();
+    ~SortFilterModel() override;
 
     void setModel(QAbstractItemModel *source);
 
diff --git a/src/declarativeimports/core/svgitem.h b/src/declarativeimports/core/svgitem.h
index 2ca3decfd..53e753dad 100644
--- a/src/declarativeimports/core/svgitem.h
+++ b/src/declarativeimports/core/svgitem.h
@@ -69,7 +69,7 @@ public:
 /// @cond INTERNAL_DOCS
 
     explicit SvgItem(QQuickItem *parent = nullptr);
-    ~SvgItem();
+    ~SvgItem() override;
 
     void setElementId(const QString &elementID);
     QString elementId() const;
diff --git a/src/declarativeimports/core/windowthumbnail.h b/src/declarativeimports/core/windowthumbnail.h
index d63e0ffd9..f9f39cb54 100644
--- a/src/declarativeimports/core/windowthumbnail.h
+++ b/src/declarativeimports/core/windowthumbnail.h
@@ -82,8 +82,8 @@ class WindowThumbnail : public QQuickItem, public QAbstractNativeEventFilter
     Q_PROPERTY(bool thumbnailAvailable READ thumbnailAvailable NOTIFY thumbnailAvailableChanged)
 
 public:
-    WindowThumbnail(QQuickItem *parent = nullptr);
-    virtual ~WindowThumbnail();
+    explicit WindowThumbnail(QQuickItem *parent = nullptr);
+    ~WindowThumbnail() override;
     bool nativeEventFilter(const QByteArray &eventType, void *message, long int *result) override;
     QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *updatePaintNodeData) override;
 
diff --git a/src/declarativeimports/plasmacomponents/fullscreensheet.h b/src/declarativeimports/plasmacomponents/fullscreensheet.h
index 914cf37c9..3a2b283a8 100644
--- a/src/declarativeimports/plasmacomponents/fullscreensheet.h
+++ b/src/declarativeimports/plasmacomponents/fullscreensheet.h
@@ -33,8 +33,8 @@ class FullScreenSheet : public FullScreenWindow
     Q_PROPERTY(QString rejectButtonText READ rejectButtonText WRITE setRejectButtonText NOTIFY rejectButtonTextChanged)
 
 public:
-    FullScreenSheet(QDeclarativeItem *parent = nullptr);
-    ~FullScreenSheet();
+    explicit FullScreenSheet(QDeclarativeItem *parent = nullptr);
+    ~FullScreenSheet() override;
 
     QString title() const;
     void setTitle(const QString &text);
diff --git a/src/declarativeimports/plasmacomponents/fullscreenwindow.h b/src/declarativeimports/plasmacomponents/fullscreenwindow.h
index 99b139661..a9a7dbd4b 100644
--- a/src/declarativeimports/plasmacomponents/fullscreenwindow.h
+++ b/src/declarativeimports/plasmacomponents/fullscreenwindow.h
@@ -44,8 +44,8 @@ class FullScreenWindow : public QDeclarativeItem
     Q_PROPERTY(DialogStatus::Status status READ status NOTIFY statusChanged)
 
 public:
-    FullScreenWindow(QDeclarativeItem *parent = nullptr);
-    ~FullScreenWindow();
+    explcit FullScreenWindow(QDeclarativeItem *parent = nullptr);
+    ~FullScreenWindow() override;
 
     QGraphicsObject *mainItem() const;
     void setMainItem(QGraphicsObject *mainItem);