diff --git a/include/FramelessHelper/Quick/framelessquickmodule.h b/include/FramelessHelper/Quick/framelessquickmodule.h
index dc24b86..c1e98c0 100644
--- a/include/FramelessHelper/Quick/framelessquickmodule.h
+++ b/include/FramelessHelper/Quick/framelessquickmodule.h
@@ -25,9 +25,6 @@
 #pragma once
 
 #include "framelesshelperquick_global.h"
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
-#  include <QtQml/qqmlextensionplugin.h>
-#endif // (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
 
 QT_BEGIN_NAMESPACE
 class QQmlEngine;
@@ -40,18 +37,4 @@ namespace FramelessHelper::Quick
 FRAMELESSHELPER_QUICK_API void registerTypes(QQmlEngine *engine);
 } // namespace FramelessHelper::Quick
 
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
-class FRAMELESSHELPER_QUICK_API FramelessHelperQuickPlugin : public QQmlEngineExtensionPlugin
-{
-    Q_OBJECT
-    Q_PLUGIN_METADATA(IID QQmlEngineExtensionInterface_iid)
-
-public:
-    explicit FramelessHelperQuickPlugin(QObject *parent = nullptr);
-    ~FramelessHelperQuickPlugin() override;
-
-    void initializeEngine(QQmlEngine *engine, const char *uri) override;
-};
-#endif // (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
-
 FRAMELESSHELPER_END_NAMESPACE
diff --git a/src/quick/framelessquickmodule.cpp b/src/quick/framelessquickmodule.cpp
index 90cf697..648b2d8 100644
--- a/src/quick/framelessquickmodule.cpp
+++ b/src/quick/framelessquickmodule.cpp
@@ -87,26 +87,4 @@ void FramelessHelper::Quick::registerTypes(QQmlEngine *engine)
     qmlRegisterModule(QUICK_URI_FULL);
 }
 
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
-FramelessHelperQuickPlugin::FramelessHelperQuickPlugin(QObject *parent) : QQmlEngineExtensionPlugin(parent)
-{
-}
-
-FramelessHelperQuickPlugin::~FramelessHelperQuickPlugin() = default;
-
-void FramelessHelperQuickPlugin::initializeEngine(QQmlEngine *engine, const char *uri)
-{
-    Q_ASSERT(engine);
-    Q_ASSERT(uri);
-    if (!engine || !uri) {
-        return;
-    }
-    Q_ASSERT(qstrcmp(uri, FRAMELESSHELPER_QUICK_URI) == 0);
-    if (qstrcmp(uri, FRAMELESSHELPER_QUICK_URI) != 0) {
-        return;
-    }
-    FramelessHelper::Quick::registerTypes(engine);
-}
-#endif // (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
-
 FRAMELESSHELPER_END_NAMESPACE