diff --git a/YACReaderLibrary/classic_comics_view.h b/YACReaderLibrary/classic_comics_view.h
index 4b09ca96..87122dc7 100644
--- a/YACReaderLibrary/classic_comics_view.h
+++ b/YACReaderLibrary/classic_comics_view.h
@@ -19,7 +19,7 @@ class ClassicComicsView : public ComicsView
 {
     Q_OBJECT
 public:
-    ClassicComicsView(QWidget *parent = 0);
+    explicit ClassicComicsView(QWidget *parent = nullptr);
     void setToolBar(QToolBar *toolBar) override;
     void setModel(ComicModel *model) override;
 
diff --git a/YACReaderLibrary/grid_comics_view.h b/YACReaderLibrary/grid_comics_view.h
index 8b39f1d3..7ff0e702 100644
--- a/YACReaderLibrary/grid_comics_view.h
+++ b/YACReaderLibrary/grid_comics_view.h
@@ -19,8 +19,8 @@ class GridComicsView : public ComicsView
 {
     Q_OBJECT
 public:
-    explicit GridComicsView(QWidget *parent = 0);
-    virtual ~GridComicsView();
+    explicit GridComicsView(QWidget *parent = nullptr);
+    ~GridComicsView() override;
     void setToolBar(QToolBar *toolBar) override;
     void setModel(ComicModel *model) override;
     void setCurrentIndex(const QModelIndex &index) override;
diff --git a/YACReaderLibrary/info_comics_view.h b/YACReaderLibrary/info_comics_view.h
index d4fe38d6..3cc925c8 100644
--- a/YACReaderLibrary/info_comics_view.h
+++ b/YACReaderLibrary/info_comics_view.h
@@ -29,7 +29,7 @@ public:
     void focusComicsNavigation(Qt::FocusReason reason) override;
 
 public slots:
-    void setShowMarks(bool show);
+    void setShowMarks(bool show) override;
     void selectAll() override;
 
 protected slots: