diff --git a/src/render/preview/BasePreview.cpp b/src/render/preview/BasePreview.cpp
index 04d66d3..63f8d80 100644
--- a/src/render/preview/BasePreview.cpp
+++ b/src/render/preview/BasePreview.cpp
@@ -118,7 +118,7 @@ public:
 
             if (changed)
             {
-                _need_render = not _preview->commitChunkTransaction(&pixbuf, _xstart, _ystart, _xsize, _ysize, revision);
+                _need_render = not _preview->commitChunkTransaction(pixbuf, _xstart, _ystart, _xsize, _ysize, revision);
             }
             else
             {
@@ -613,7 +613,7 @@ QImage BasePreview::startChunkTransaction(int x, int y, int w, int h, int* revis
     return result;
 }
 
-bool BasePreview::commitChunkTransaction(QImage* chunk, int x, int y, int w, int h, int revision)
+bool BasePreview::commitChunkTransaction(const QImage &chunk, int x, int y, int w, int h, int revision)
 {
     bool result;
 
@@ -621,13 +621,8 @@ bool BasePreview::commitChunkTransaction(QImage* chunk, int x, int y, int w, int
 
     if (revision == _revision)
     {
-        for (int ix = 0; ix < w; ix++)
-        {
-            for (int iy = 0; iy < h; iy++)
-            {
-                _pixbuf->setPixel(x + ix, y + iy, chunk->pixel(ix, iy));
-            }
-        }
+        QPainter painter(_pixbuf);
+        painter.drawImage(x, y, chunk, 0, 0, w, h);
         emit contentChange();
         result = true;
     }
@@ -740,6 +735,8 @@ void BasePreview::resizeEvent(QResizeEvent* event)
 
     delete image;
 
+    _revision++;
+
     this->_lock_drawing->unlock();
 }
 
diff --git a/src/render/preview/BasePreview.h b/src/render/preview/BasePreview.h
index 54ace9d..6d1e3e0 100644
--- a/src/render/preview/BasePreview.h
+++ b/src/render/preview/BasePreview.h
@@ -48,7 +48,7 @@ public:
     void redraw();
 
     QImage startChunkTransaction(int x, int y, int w, int h, int* revision);
-    bool commitChunkTransaction(QImage* chunk, int x, int y, int w, int h, int revision);
+    bool commitChunkTransaction(const QImage &chunk, int x, int y, int w, int h, int revision);
     void rollbackChunkTransaction();
 
     QColor getPixelColor(int x, int y);