diff --git a/kded/osd.h b/kded/osd.h
index ab75629..d810209 100644
--- a/kded/osd.h
+++ b/kded/osd.h
@@ -1,74 +1,74 @@
 /*
  *  Copyright 2014 Martin Klapetek <mklapetek@kde.org>
  *  Copyright 2016 Sebastian Kügler <sebas@kde.org>
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program 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 General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
 #ifndef KSCREEN_OSD_H
 #define KSCREEN_OSD_H
 
 #include <QObject>
 #include <QRect>
 #include <QString>
 
 #include <KScreen/Output>
 
 #include "osdmanager.h"
 
 namespace KDeclarative {
     class QmlObject;
 }
 
 class QTimer;
 
 namespace KScreen {
 
 class Osd : public QObject {
 
     Q_OBJECT
 
 public:
-    Osd(const OutputPtr &output, QObject *parent = nullptr);
+    explicit Osd(const OutputPtr &output, QObject *parent = nullptr);
     ~Osd() override;
 
     void showGenericOsd(const QString &icon, const QString &text);
     void showOutputIdentifier(const KScreen::OutputPtr &output);
     void showActionSelector();
     void hideOsd();
 
 Q_SIGNALS:
     void osdActionSelected(OsdAction::Action action);
 
 private Q_SLOTS:
     void onOsdActionSelected(int action);
     void onOutputAvailabilityChanged();
 
 private:
     bool initOsd();
     void showOsd();
     void updatePosition();
 
     KScreen::OutputPtr m_output;
     QRect m_outputGeometry;
     KDeclarative::QmlObject *m_osdObject = nullptr;
     QTimer *m_osdTimer = nullptr;
     int m_timeout = 0;
 
 };
 
 } // ns
 
 #endif // KSCREEN_OSD_H