diff --git a/3rdparty/ZxingQtReader.hpp b/3rdparty/ZxingQtReader.hpp
index 4aa2d15..cbd41b7 100644
--- a/3rdparty/ZxingQtReader.hpp
+++ b/3rdparty/ZxingQtReader.hpp
@@ -10,7 +10,11 @@
 #include <QImage>
 #include <QDebug>
 #include <QMetaType>
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
+#include "qscopeguard.h"
+#else
 #include <QScopeGuard>
+#endif
 
 #ifdef QT_MULTIMEDIA_LIB
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
diff --git a/3rdparty/qscopeguard.h b/3rdparty/qscopeguard.h
new file mode 100644
index 0000000..31100fc
--- /dev/null
+++ b/3rdparty/qscopeguard.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Sérgio Martins <sergio.martins@kdab.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCOPEGUARD_H
+#define QSCOPEGUARD_H
+
+#include <QtCore/qglobal.h>
+
+
+QT_BEGIN_NAMESPACE
+
+
+template <typename F> class QScopeGuard;
+template <typename F> QScopeGuard<F> qScopeGuard(F f);
+
+template <typename F>
+class QScopeGuard
+{
+public:
+    QScopeGuard(QScopeGuard &&other) Q_DECL_NOEXCEPT
+        : m_func(std::move(other.m_func))
+        , m_invoke(other.m_invoke)
+    {
+        other.dismiss();
+    }
+
+    ~QScopeGuard()
+    {
+        if (m_invoke)
+            m_func();
+    }
+
+    void dismiss() Q_DECL_NOEXCEPT
+    {
+        m_invoke = false;
+    }
+
+private:
+    explicit QScopeGuard(F f) Q_DECL_NOEXCEPT
+        : m_func(std::move(f))
+    {
+    }
+
+    Q_DISABLE_COPY(QScopeGuard)
+
+    F m_func;
+    bool m_invoke = true;
+    friend QScopeGuard qScopeGuard<F>(F);
+};
+
+
+template <typename F>
+QScopeGuard<F> qScopeGuard(F f)
+{
+    return QScopeGuard<F>(std::move(f));
+}
+
+QT_END_NAMESPACE
+
+#endif // QSCOPEGUARD_H