diff --git a/src/edid.h b/src/edid.h
index 7b22aef..a21585f 100644
--- a/src/edid.h
+++ b/src/edid.h
@@ -1,88 +1,88 @@
 /*************************************************************************************
  *   Copyright (C) 2012 by Daniel Nicoletti <dantti12@gmail.com>                     *
  *             (C) 2012, 2013 by Daniel Vrátil <dvratil@redhat.com>                  *
  *                                                                                   *
  *  This library is free software; you can redistribute it and/or                    *
  *  modify it under the terms of the GNU Lesser General Public                       *
  *  License as published by the Free Software Foundation; either                     *
  *  version 2.1 of the License, or (at your option) any later version.               *
  *                                                                                   *
  *  This library is distributed in the hope that it will be useful,                  *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of                   *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU                *
  *  Lesser General Public License for more details.                                  *
  *                                                                                   *
  *  You should have received a copy of the GNU Lesser General Public                 *
  *  License along with this library; if not, write to the Free Software              *
  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA       *
  *************************************************************************************/
 
 
 #ifndef KSCREEN_EDID_H
 #define KSCREEN_EDID_H
 
 #include "kscreen_export.h"
 
 #include <QObject>
 #include <QtGlobal>
 #include <QQuaternion>
 
 namespace KScreen
 {
 
 class KSCREEN_EXPORT Edid: public QObject
 {
     Q_OBJECT
 
     Q_PROPERTY(QString deviceId READ deviceId CONSTANT)
     Q_PROPERTY(QString name READ name CONSTANT)
     Q_PROPERTY(QString vendor READ vendor CONSTANT)
     Q_PROPERTY(QString serial READ serial CONSTANT)
     Q_PROPERTY(QString eisaId READ eisaId CONSTANT)
     Q_PROPERTY(QString hash READ hash CONSTANT)
     Q_PROPERTY(uint width READ width CONSTANT)
     Q_PROPERTY(uint height READ height CONSTANT)
     Q_PROPERTY(qreal gamma READ gamma CONSTANT)
     Q_PROPERTY(QQuaternion red READ red CONSTANT)
     Q_PROPERTY(QQuaternion green READ green CONSTANT)
     Q_PROPERTY(QQuaternion blue READ blue CONSTANT)
     Q_PROPERTY(QQuaternion white READ white CONSTANT)
 
   public:
     explicit Edid();
     explicit Edid(const QByteArray &data, QObject *parent = nullptr);
     ~Edid() override;
 
-    Edid* clone() const;
+    Q_REQUIRED_RESULT Edid* clone() const;
 
     bool isValid() const;
 
     QString deviceId(const QString &fallbackName = QString()) const;
     QString name() const;
     QString vendor() const;
     QString serial() const;
     QString eisaId() const;
     QString hash() const;
     QString pnpId() const;
     uint width() const;
     uint height() const;
     qreal gamma() const;
     QQuaternion red() const;
     QQuaternion green() const;
     QQuaternion blue() const;
     QQuaternion white() const;
 
   private:
     Q_DISABLE_COPY(Edid)
 
     class Private;
     Private * const d;
 
     explicit Edid(Private *dd);
 };
 
 }
 
 Q_DECLARE_METATYPE(KScreen::Edid*)
 
 #endif // EDID_H