diff --git a/plugins/filters/asccdl/kis_asccdl_filter.h b/plugins/filters/asccdl/kis_asccdl_filter.h
index 50c38efecc..a7eb26a7b6 100644
--- a/plugins/filters/asccdl/kis_asccdl_filter.h
+++ b/plugins/filters/asccdl/kis_asccdl_filter.h
@@ -1,61 +1,61 @@
 /*
  * Copyright (c) 2017 Wolthera van Hövell tot Westerflier <griffinvalley@gmail.com>
  *
  *  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_ASCCDL_FILTER_H
 #define KIS_ASCCDL_FILTER_H
 
 #include <filter/kis_filter.h>
 #include "filter/kis_color_transformation_filter.h"
 
 class KritaASCCDL : public QObject
 {
     Q_OBJECT
 public:
     KritaASCCDL(QObject *parent, const QVariantList &);
     ~KritaASCCDL() override;
 };
 
 class KisFilterASCCDL: public KisColorTransformationFilter
 {
 public:
     KisFilterASCCDL();
 public:
 
     static inline KoID id() {
         return KoID("asc-cdl", i18n("Slope, Offset, Power(ASC-CDL)"));
     }
     KoColorTransformation *createTransformation(const KoColorSpace* cs, const KisFilterConfigurationSP config) const override;
     KisConfigWidget *createConfigurationWidget(QWidget* parent, const KisPaintDeviceSP dev) const override;
-    bool needsTransparentPixels(const KisFilterConfigurationSP config, const KoColorSpace *cs) const;
+    bool needsTransparentPixels(const KisFilterConfigurationSP config, const KoColorSpace *cs) const override;
 protected:
     KisFilterConfigurationSP factoryConfiguration() const override;
 };
 
 class KisASCCDLTransformation : public KoColorTransformation
 {
 public:
     KisASCCDLTransformation(const KoColorSpace *cs, KoColor slope, KoColor offset, KoColor power);
     void transform(const quint8* src, quint8* dst, qint32 nPixels) const override;
 private:
     QVector<float> m_slope;
     QVector<float> m_offset;
     QVector<float> m_power;
     const KoColorSpace *m_cs;
 };
 
 #endif // KIS_ASCCDL_H