diff --git a/src/plugins/debugger/debuggermainwindow.cpp b/src/plugins/debugger/debuggermainwindow.cpp
index 6e241ceadbe..a639354d42d 100644
--- a/src/plugins/debugger/debuggermainwindow.cpp
+++ b/src/plugins/debugger/debuggermainwindow.cpp
@@ -80,8 +80,6 @@ private:
 
 class DebuggerMainWindowPrivate : public QObject
 {
-    Q_OBJECT
-
 public:
     explicit DebuggerMainWindowPrivate(DebuggerMainWindow *mainWindow);
 
@@ -97,7 +95,6 @@ public:
     QDockWidget *dockWidget(const QString &objectName) const
         { return q->findChild<QDockWidget *>(objectName); }
 
-public slots:
     void resetDebuggerLayout();
     void updateUiForProject(Project *project);
     void updateUiForTarget(Target *target);
@@ -105,7 +102,6 @@ public slots:
     void updateUiForCurrentRunConfiguration();
     void updateActiveLanguages();
     void updateDockWidgetSettings();
-    void openMemoryEditor() { Internal::openMemoryEditor(); }
 
 public:
     DebuggerMainWindow *q;
@@ -300,10 +296,10 @@ void DebuggerMainWindowPrivate::createViewsMenuItems()
     m_viewsMenu = ActionManager::actionContainer(Id(Core::Constants::M_WINDOW_VIEWS));
     QTC_ASSERT(m_viewsMenu, return);
 
-    QAction *openMemoryEditorAction = new QAction(this);
-    openMemoryEditorAction->setText(tr("Memory..."));
+    auto openMemoryEditorAction = new QAction(this);
+    openMemoryEditorAction->setText(DebuggerMainWindow::tr("Memory..."));
     connect(openMemoryEditorAction, &QAction::triggered,
-            this, &DebuggerMainWindowPrivate::openMemoryEditor);
+            this, &Internal::openMemoryEditor);
 
     // Add menu items
     Command *cmd = 0;
@@ -405,12 +401,12 @@ QDockWidget *DebuggerMainWindow::createDockWidget(const DebuggerLanguage &langua
 
     dockWidget->installEventFilter(&d->m_resizeEventFilter);
 
-    connect(dockWidget->toggleViewAction(), SIGNAL(triggered(bool)),
-        d, SLOT(updateDockWidgetSettings()));
-    connect(dockWidget, SIGNAL(topLevelChanged(bool)),
-        d, SLOT(updateDockWidgetSettings()));
-    connect(dockWidget, SIGNAL(dockLocationChanged(Qt::DockWidgetArea)),
-        d, SLOT(updateDockWidgetSettings()));
+    connect(dockWidget->toggleViewAction(), &QAction::triggered,
+            d, &DebuggerMainWindowPrivate::updateDockWidgetSettings);
+    connect(dockWidget, &QDockWidget::topLevelChanged,
+            d, &DebuggerMainWindowPrivate::updateDockWidgetSettings);
+    connect(dockWidget, &QDockWidget::dockLocationChanged,
+            d, &DebuggerMainWindowPrivate::updateDockWidgetSettings);
 
     return dockWidget;
 }
@@ -431,10 +427,10 @@ QWidget *DebuggerMainWindow::createContents(IMode *mode)
     //d->m_mainWindow = new Internal::DebuggerMainWindow(this);
     setDocumentMode(true);
     setDockNestingEnabled(true);
-    connect(this, SIGNAL(resetLayout()),
-        d, SLOT(resetDebuggerLayout()));
-    connect(autoHideTitleBarsAction(), SIGNAL(triggered()),
-        d, SLOT(updateDockWidgetSettings()));
+    connect(this, &FancyMainWindow::resetLayout,
+            d, &DebuggerMainWindowPrivate::resetDebuggerLayout);
+    connect(autoHideTitleBarsAction(), &QAction::triggered,
+            d, &DebuggerMainWindowPrivate::updateDockWidgetSettings);
 
     auto editorHolderLayout = new QVBoxLayout;
     editorHolderLayout->setMargin(0);
@@ -473,7 +469,7 @@ QWidget *DebuggerMainWindow::createContents(IMode *mode)
         menu.exec(d->m_viewButton->mapToGlobal(QPoint()));
     });
 
-    auto dock = new QDockWidget(DebuggerMainWindowPrivate::tr("Debugger Toolbar"));
+    auto dock = new QDockWidget(DebuggerMainWindow::tr("Debugger Toolbar"));
     dock->setObjectName(QLatin1String("Debugger Toolbar"));
     dock->setWidget(debugToolBar);
     dock->setFeatures(QDockWidget::NoDockWidgetFeatures);
diff --git a/src/plugins/debugger/debuggerplugin.cpp b/src/plugins/debugger/debuggerplugin.cpp
index d644824e198..38790e53711 100644
--- a/src/plugins/debugger/debuggerplugin.cpp
+++ b/src/plugins/debugger/debuggerplugin.cpp
@@ -2496,8 +2496,8 @@ void DebuggerPluginPrivate::extensionsInitialized()
     act = m_frameUpAction = new QAction(tr("Move to Calling Frame"), this);
     connect(act, &QAction::triggered, this, &DebuggerPluginPrivate::handleFrameUp);
 
-    connect(action(OperateByInstruction), SIGNAL(triggered(bool)),
-        SLOT(handleOperateByInstructionTriggered(bool)));
+    connect(action(OperateByInstruction), &QAction::triggered,
+            this, &DebuggerPluginPrivate::handleOperateByInstructionTriggered);
 
     ActionContainer *debugMenu = ActionManager::actionContainer(PE::M_DEBUG);