diff --git a/plugins/filters/colorsfilters/kis_desaturate_filter.h b/plugins/filters/colorsfilters/kis_desaturate_filter.h
index 59bf312011..053b329488 100644
--- a/plugins/filters/colorsfilters/kis_desaturate_filter.h
+++ b/plugins/filters/colorsfilters/kis_desaturate_filter.h
@@ -1,70 +1,71 @@
 /*
  * This file is part of Krita
  *
  * Copyright (c) 2004 Cyrille Berger <cberger@cberger.net>
  *
  *  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 KIS_DESATURATE_FILTER_H
 #define KIS_DESATURATE_FILTER_H
 
 #include <QObject>
 #include <QVariant>
+#include <QButtonGroup>
 
 #include <kis_config_widget.h>
 #include <filter/kis_color_transformation_filter.h>
 
 #include "ui_wdg_desaturate.h"
 
 class KoColorSpace;
 class KoColorTransformation;
 
 class KisDesaturateFilter : public KisColorTransformationFilter
 {
 public:
     KisDesaturateFilter();
     ~KisDesaturateFilter() override;
 public:
 
     KisConfigWidget * createConfigurationWidget(QWidget* parent, const KisPaintDeviceSP dev) const override;
 
     KoColorTransformation* createTransformation(const KoColorSpace* cs, const KisFilterConfigurationSP config) const override;
 
     static inline KoID id() {
         return KoID("desaturate", i18n("Desaturate"));
     }
 
     KisFilterConfigurationSP factoryConfiguration() const override;
 
 };
 
 
 class KisDesaturateConfigWidget : public KisConfigWidget
 {
 
     Q_OBJECT
 
 public:
     KisDesaturateConfigWidget(QWidget * parent, Qt::WindowFlags f = 0);
     ~KisDesaturateConfigWidget() override;
 
     KisPropertiesConfigurationSP  configuration() const override;
     void setConfiguration(const KisPropertiesConfigurationSP config) override;
     Ui_WdgDesaturate *m_page;
     QButtonGroup *m_group;
 };
 
 
 #endif