diff --git a/kcm/src/scalingconfig.h b/kcm/src/scalingconfig.h
index 3181e4a..d5e722e 100644
--- a/kcm/src/scalingconfig.h
+++ b/kcm/src/scalingconfig.h
@@ -1,47 +1,47 @@
 /*
  * Copyright (C) 2015 David Edmundson <davidedmundson@kde.org>
  * 
  * 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
  * 
  */
 
 #ifndef SCALINGCONFIG_H
 #define SCALINGCONFIG_H
 
 #include <QDialog>
 
 #include <KScreen/Types>
 
 #include "ui_scaling.h"
 
 class ScalingConfig : public QDialog
 {
     Q_OBJECT
 public:
-    explicit ScalingConfig(const KScreen::OutputList &outputList, QWidget* parent = 0);
+    explicit ScalingConfig(const KScreen::OutputList &outputList, QWidget* parent = nullptr);
     ~ScalingConfig() override;
     
 protected:
     void accept() Q_DECL_OVERRIDE;
 private:
     void load();
     qreal scaleFactor() const;
     int scaleDPI() const;
     Ui::Scaling ui;
     qreal m_initialScalingFactor = 1.0;
     KScreen::OutputList m_outputList;
 };
 
 #endif // SCALINGCONFIG_H