diff --git a/src/plugins/mesonprojectmanager/mesonprojectplugin.cpp b/src/plugins/mesonprojectmanager/mesonprojectplugin.cpp
index 04904188312..6e0b58e1f9a 100644
--- a/src/plugins/mesonprojectmanager/mesonprojectplugin.cpp
+++ b/src/plugins/mesonprojectmanager/mesonprojectplugin.cpp
@@ -38,20 +38,11 @@
 #include "settings/tools/toolssettingsaccessor.h"
 #include "settings/tools/toolssettingspage.h"
 
-#include <coreplugin/actionmanager/actioncontainer.h>
-#include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/icore.h>
 
-#include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/projectmanager.h>
 #include <projectexplorer/runcontrol.h>
 
-#include <extensionsystem/pluginmanager.h>
-
-#include <utils/parameteraction.h>
-
-#include <QObject>
-
 using namespace Core;
 using namespace ProjectExplorer;
 using namespace Utils;
@@ -113,8 +104,6 @@ bool MesonProjectPlugin::initialize(const QStringList & /*arguments*/, QString *
     return true;
 }
 
-void MesonProjectPlugin::extensionsInitialized() {}
-
 } // namespace Internal
 } // namespace MesonProjectManager
 
diff --git a/src/plugins/mesonprojectmanager/mesonprojectplugin.h b/src/plugins/mesonprojectmanager/mesonprojectplugin.h
index 8cbcfa10bae..15ef78e407b 100644
--- a/src/plugins/mesonprojectmanager/mesonprojectplugin.h
+++ b/src/plugins/mesonprojectmanager/mesonprojectplugin.h
@@ -30,22 +30,16 @@
 namespace MesonProjectManager {
 namespace Internal {
 
-class MesonProjectPlugin : public ExtensionSystem::IPlugin
+class MesonProjectPlugin final : public ExtensionSystem::IPlugin
 {
     Q_OBJECT
     Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QtCreatorPlugin" FILE "MesonProjectManager.json")
 
 public:
-    ~MesonProjectPlugin() override;
-
-#ifdef WITH_TESTS
-private slots:
-
-#endif
+    ~MesonProjectPlugin() final;
 
 private:
-    bool initialize(const QStringList &arguments, QString *errorMessage) override;
-    void extensionsInitialized() override;
+    bool initialize(const QStringList &arguments, QString *errorMessage) final;
 
     class MesonProjectPluginPrivate *d = nullptr;
 };