diff --git a/src/libs/sidebar/container.h b/src/libs/sidebar/container.h
index 73a56e1..cd39443 100644
--- a/src/libs/sidebar/container.h
+++ b/src/libs/sidebar/container.h
@@ -36,19 +36,14 @@ class View;
 class Container : public QWidget
 {
     Q_OBJECT
+    Q_DISABLE_COPY(Container)
 public:
     explicit Container(QWidget *parent = nullptr);
     ~Container() override;
 
     void addView(View *view);
 
-public slots:
-
-signals:
-
 private:
-    Q_DISABLE_COPY(Container)
-
     QSplitter *m_splitter = nullptr;
 
     QList<View *> m_views;
diff --git a/src/libs/sidebar/proxyview.h b/src/libs/sidebar/proxyview.h
index 85b714b..536d5c1 100644
--- a/src/libs/sidebar/proxyview.h
+++ b/src/libs/sidebar/proxyview.h
@@ -33,13 +33,12 @@ class ViewProvider;
 class ProxyView final : public View
 {
     Q_OBJECT
+    Q_DISABLE_COPY(ProxyView)
 public:
     explicit ProxyView(ViewProvider *provider, QString id = QString(), QWidget *parent = nullptr);
     ~ProxyView() override;
 
 private:
-    Q_DISABLE_COPY(ProxyView)
-
     void clearCurrentView();
 
     ViewProvider *m_viewProvider = nullptr;
diff --git a/src/libs/sidebar/view.h b/src/libs/sidebar/view.h
index d94771f..892a9de 100644
--- a/src/libs/sidebar/view.h
+++ b/src/libs/sidebar/view.h
@@ -31,11 +31,9 @@ namespace Sidebar {
 class View : public QWidget
 {
     Q_OBJECT
+    Q_DISABLE_COPY(View)
 public:
     explicit View(QWidget *parent = nullptr);
-
-private:
-    Q_DISABLE_COPY(View)
 };
 
 } // namespace Sidebar
diff --git a/src/libs/sidebar/viewprovider.h b/src/libs/sidebar/viewprovider.h
index cdc7f0f..1bff697 100644
--- a/src/libs/sidebar/viewprovider.h
+++ b/src/libs/sidebar/viewprovider.h
@@ -33,6 +33,7 @@ class View;
 class ViewProvider : public QObject
 {
     Q_OBJECT
+    Q_DISABLE_COPY(ViewProvider)
 public:
     explicit ViewProvider(QObject *parent = nullptr);
 
@@ -40,9 +41,6 @@ public:
 
 signals:
     void viewChanged();
-
-private:
-    Q_DISABLE_COPY(ViewProvider)
 };
 
 } // namespace Sidebar
diff --git a/src/libs/ui/browsertab.h b/src/libs/ui/browsertab.h
index 35adf92..540af04 100644
--- a/src/libs/ui/browsertab.h
+++ b/src/libs/ui/browsertab.h
@@ -47,6 +47,7 @@ class SearchSidebar;
 class BrowserTab : public QWidget
 {
     Q_OBJECT
+    Q_DISABLE_COPY(BrowserTab)
 public:
     explicit BrowserTab(QWidget *parent = nullptr);
     BrowserTab *clone(QWidget *parent = nullptr) const;
@@ -64,7 +65,6 @@ signals:
     void titleChanged(const QString &title);
 
 private:
-    Q_DISABLE_COPY(BrowserTab)
     QIcon docsetIcon(const QUrl &url) const;
 
     // Widgets.
diff --git a/src/libs/ui/searchsidebar.h b/src/libs/ui/searchsidebar.h
index 1be802c..0ef4fe9 100644
--- a/src/libs/ui/searchsidebar.h
+++ b/src/libs/ui/searchsidebar.h
@@ -48,6 +48,7 @@ class SearchEdit;
 class SearchSidebar final : public Sidebar::View
 {
     Q_OBJECT
+    Q_DISABLE_COPY(SearchSidebar)
 public:
     explicit SearchSidebar(QWidget *parent = nullptr);
     SearchSidebar *clone(QWidget *parent = nullptr) const;
@@ -73,7 +74,6 @@ protected:
     void showEvent(QShowEvent *event) override;
 
 private:
-    Q_DISABLE_COPY(SearchSidebar)
     explicit SearchSidebar(const SearchSidebar *other, QWidget *parent = nullptr);
     void setTreeViewModel(QAbstractItemModel *model, bool isRootDecorated);
 
diff --git a/src/libs/ui/sidebarviewprovider.h b/src/libs/ui/sidebarviewprovider.h
index 3bf24cf..7c15f46 100644
--- a/src/libs/ui/sidebarviewprovider.h
+++ b/src/libs/ui/sidebarviewprovider.h
@@ -33,14 +33,13 @@ class MainWindow;
 class SidebarViewProvider : public Sidebar::ViewProvider
 {
     Q_OBJECT
+    Q_DISABLE_COPY(SidebarViewProvider)
 public:
     explicit SidebarViewProvider(MainWindow *mainWindow);
 
     Sidebar::View *view(const QString &id = QString()) const override;
 
 private:
-    Q_DISABLE_COPY(SidebarViewProvider)
-
     MainWindow *m_mainWindow = nullptr;
 };