diff --git a/src/plugins/beautifier/beautifierplugin.cpp b/src/plugins/beautifier/beautifierplugin.cpp
index 534de41ce0e..bc5dde7ac5b 100644
--- a/src/plugins/beautifier/beautifierplugin.cpp
+++ b/src/plugins/beautifier/beautifierplugin.cpp
@@ -133,6 +133,13 @@ void BeautifierPlugin::extensionsInitialized()
     dd = new BeautifierPluginPrivate;
 }
 
+ExtensionSystem::IPlugin::ShutdownFlag BeautifierPlugin::aboutToShutdown()
+{
+    delete dd;
+    dd = nullptr;
+    return SynchronousShutdown;
+}
+
 BeautifierPluginPrivate::BeautifierPluginPrivate()
 {
     updateActions();
diff --git a/src/plugins/beautifier/beautifierplugin.h b/src/plugins/beautifier/beautifierplugin.h
index b3538820ec9..153870d49fa 100644
--- a/src/plugins/beautifier/beautifierplugin.h
+++ b/src/plugins/beautifier/beautifierplugin.h
@@ -49,6 +49,7 @@ public:
 private:
     bool initialize(const QStringList &arguments, QString *errorString) override;
     void extensionsInitialized() override;
+    ShutdownFlag aboutToShutdown() override;
 };
 
 } // namespace Internal