diff --git a/libs/image/kis_convolution_painter.cc b/libs/image/kis_convolution_painter.cc
index 7ec9e31ca4..384f59f55f 100644
--- a/libs/image/kis_convolution_painter.cc
+++ b/libs/image/kis_convolution_painter.cc
@@ -1,189 +1,189 @@
 /*
  *  Copyright (c) 2005 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.
  */
 
 #include "kis_convolution_painter.h"
 
 #include <stdlib.h>
 #include <string.h>
 #include <cfloat>
 
 #include <QBrush>
 #include <QColor>
 #include <QPen>
 #include <QMatrix>
 #include <QImage>
 #include <QMap>
 #include <QPainter>
 #include <QRect>
 #include <QString>
 #include <QVector>
 
 #include <kis_debug.h>
 #include <klocalizedstring.h>
 
 #include "kis_convolution_kernel.h"
 #include "kis_global.h"
 #include "kis_image.h"
 #include "kis_layer.h"
 #include "kis_paint_device.h"
 #include "kis_painter.h"
 #include "KoColorSpace.h"
 #include <KoChannelInfo.h>
 #include "kis_types.h"
 
 #include "kis_selection.h"
 
 #include "kis_convolution_worker.h"
 #include "kis_convolution_worker_spatial.h"
 
 #include "config_convolution.h"
 
 #ifdef HAVE_FFTW3
 #include "kis_convolution_worker_fft.h"
 #endif
 
 
-bool KisConvolutionPainter::useFFTImplemenation(const KisConvolutionKernelSP kernel) const
+bool KisConvolutionPainter::useFFTImplementation(const KisConvolutionKernelSP kernel) const
 {
     bool result = false;
 
 #ifdef HAVE_FFTW3
     #define THRESHOLD_SIZE 5
 
     result =
         m_enginePreference == FFTW ||
         (m_enginePreference == NONE &&
          (kernel->width() > THRESHOLD_SIZE ||
           kernel->height() > THRESHOLD_SIZE));
 #else
     Q_UNUSED(kernel);
 #endif
 
     return result;
 }
 
 template<class factory>
 KisConvolutionWorker<factory>* KisConvolutionPainter::createWorker(const KisConvolutionKernelSP kernel,
                                                                    KisPainter *painter,
                                                                    KoUpdater *progress)
 {
     KisConvolutionWorker<factory> *worker;
 
 #ifdef HAVE_FFTW3
-    if (useFFTImplemenation(kernel)) {
+    if (useFFTImplementation(kernel)) {
         worker = new KisConvolutionWorkerFFT<factory>(painter, progress);
     } else {
         worker = new KisConvolutionWorkerSpatial<factory>(painter, progress);
     }
 #else
     Q_UNUSED(kernel);
     worker = new KisConvolutionWorkerSpatial<factory>(painter, progress);
 #endif
 
     return worker;
 }
 
 
 bool KisConvolutionPainter::supportsFFTW()
 {
 #ifdef HAVE_FFTW3
     return true;
 #else
     return false;
 #endif
 }
 
 
 KisConvolutionPainter::KisConvolutionPainter()
     : KisPainter(),
       m_enginePreference(NONE)
 {
 }
 
 KisConvolutionPainter::KisConvolutionPainter(KisPaintDeviceSP device)
     : KisPainter(device),
       m_enginePreference(NONE)
 {
 }
 
 KisConvolutionPainter::KisConvolutionPainter(KisPaintDeviceSP device, KisSelectionSP selection)
     : KisPainter(device, selection),
       m_enginePreference(NONE)
 {
 }
 
 KisConvolutionPainter::KisConvolutionPainter(KisPaintDeviceSP device, TestingEnginePreference enginePreference)
     : KisPainter(device),
       m_enginePreference(enginePreference)
 {
 }
 
 void KisConvolutionPainter::applyMatrix(const KisConvolutionKernelSP kernel, const KisPaintDeviceSP src, QPoint srcPos, QPoint dstPos, QSize areaSize, KisConvolutionBorderOp borderOp)
 {
     /**
      * Force BORDER_IGNORE op for the wraparound mode,
      * because the paint device has its own special
      * iterators, which do everything for us.
      */
     if (src->defaultBounds()->wrapAroundMode()) {
         borderOp = BORDER_IGNORE;
     }
 
     // Determine whether we convolve border pixels, or not.
     switch (borderOp) {
     case BORDER_REPEAT: {
         const QRect boundsRect = src->defaultBounds()->bounds();
         const QRect requestedRect = QRect(srcPos, areaSize);
         QRect dataRect = requestedRect | boundsRect;
 
         KIS_SAFE_ASSERT_RECOVER(boundsRect != KisDefaultBounds().bounds()) {
             dataRect = requestedRect | src->exactBounds();
         }
 
         /**
          * FIXME: Implementation can return empty destination device
          * on faults and has no way to report this. This will cause a crash
          * on sequential convolutions inside iteratiors.
          *
          * o implementation should do it's work or assert otherwise
          *   (or report the issue somehow)
          * o check other cases of the switch for the vulnerability
          */
 
         if(dataRect.isValid()) {
             KisConvolutionWorker<RepeatIteratorFactory> *worker;
             worker = createWorker<RepeatIteratorFactory>(kernel, this, progressUpdater());
             worker->execute(kernel, src, srcPos, dstPos, areaSize, dataRect);
             delete worker;
         }
         break;
     }
     case BORDER_IGNORE:
     default: {
         KisConvolutionWorker<StandardIteratorFactory> *worker;
         worker = createWorker<StandardIteratorFactory>(kernel, this, progressUpdater());
         worker->execute(kernel, src, srcPos, dstPos, areaSize, QRect());
         delete worker;
     }
     }
 }
 
 bool KisConvolutionPainter::needsTransaction(const KisConvolutionKernelSP kernel) const
 {
-    return !useFFTImplemenation(kernel);
+    return !useFFTImplementation(kernel);
 }
diff --git a/libs/image/kis_convolution_painter.h b/libs/image/kis_convolution_painter.h
index 4f0a17910d..2db38414a7 100644
--- a/libs/image/kis_convolution_painter.h
+++ b/libs/image/kis_convolution_painter.h
@@ -1,104 +1,104 @@
 /*
  *  Copyright (c) 2005 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_CONVOLUTION_PAINTER_H_
 #define KIS_CONVOLUTION_PAINTER_H_
 
 #include "kis_types.h"
 #include "kis_painter.h"
 #include "kis_image.h"
 #include "kritaimage_export.h"
 
 template<class factory> class KisConvolutionWorker;
 
 
 enum KisConvolutionBorderOp {
     BORDER_IGNORE = 0, // read the pixels outside of the application rect
     BORDER_REPEAT = 1  // Use the border for the missing pixels
 };
 
 /**
  * @brief The KisConvolutionPainter class applies a convolution kernel to a paint device.
  *
  *
  * Note: https://bugs.kde.org/show_bug.cgi?id=220310 shows that there's something here
  * that we need to fix...
  */
 class KRITAIMAGE_EXPORT KisConvolutionPainter : public KisPainter
 {
 
 public:
 
     KisConvolutionPainter();
     KisConvolutionPainter(KisPaintDeviceSP device);
     KisConvolutionPainter(KisPaintDeviceSP device, KisSelectionSP selection);
 
     enum TestingEnginePreference {
         NONE,
         SPATIAL,
         FFTW
     };
 
 
     KisConvolutionPainter(KisPaintDeviceSP device, TestingEnginePreference enginePreference);
 
     /**
      * Convolve all channels in src using the specified kernel; there is only one kernel for all
      * channels possible. By default the border pixels are not convolved, that is, convolving
      * starts with at (x + kernel.width/2, y + kernel.height/2) and stops at w - (kernel.width/2)
      * and h - (kernel.height/2)
      *
      * The border op decides what to do with pixels too close to the edge of the rect as defined above.
      *
      * The channels flag determines which set out of color channels, alpha channels.
      * channels we convolve.
      *
      * Note that we do not (currently) support different kernels for
      * different channels _or_ channel types.
      *
      * If you want to convolve a subset of the channels in a pixel,
      * set those channels with KisPainter::setChannelFlags();
      */
     void applyMatrix(const KisConvolutionKernelSP kernel, const KisPaintDeviceSP src, QPoint srcPos, QPoint dstPos, QSize areaSize,
                      KisConvolutionBorderOp borderOp = BORDER_REPEAT);
 
     /**
      * The caller should ask if the painter needs an explicit transaction iff
      * the source and destination devices coincide. Otherwise, the transaction is
      * just not needed.
      */
     bool needsTransaction(const KisConvolutionKernelSP kernel) const;
 
     static bool supportsFFTW();
 
 protected:
     friend class KisConvolutionPainterTest;
 
 
 
 private:
     template<class factory>
         KisConvolutionWorker<factory>* createWorker(const KisConvolutionKernelSP kernel,
                                                     KisPainter *painter,
                                                     KoUpdater *progress);
 
-     bool useFFTImplemenation(const KisConvolutionKernelSP kernel) const;
+     bool useFFTImplementation(const KisConvolutionKernelSP kernel) const;
 
 private:
     TestingEnginePreference m_enginePreference;
 };
 #endif //KIS_CONVOLUTION_PAINTER_H_