diff --git a/imageviewer-qt4.cpp b/imageviewer-qt4.cpp
index dcdc50d..c5e2c73 100644
--- a/imageviewer-qt4.cpp
+++ b/imageviewer-qt4.cpp
@@ -109,6 +109,25 @@ void ImageViewer::resetWorkingCopy() {
   renewLogging();
 }
 
+/**
+ * No big performance, but simple.
+ * Save working copy to original image.
+ * 
+ * @brief ImageViewer::saveToOriginal 
+ */
+void ImageViewer::saveToOriginal() {
+  logFile << "Saving working copy to original ...";
+  renewLogging();
+  for(int x=0; x<original->getImage()->width(); x++) {
+    for(int y=0; y<original->getImage()->height(); y++) {
+      original->getImage()->setPixel(x, y, working_copy->getImage()->pixel(x, y));
+    }
+  }
+  updateImageDisplay();
+  logFile << "done." << std::endl;
+  renewLogging();
+}
+
 /**
  * Draws a simple, black line.
  * @brief ImageViewer::drawBlackLine
@@ -364,6 +383,10 @@ void ImageViewer::generateControlPanels() {
   reset_working_copy->setText("Reset working copy");
   QObject::connect(reset_working_copy, SIGNAL(clicked()), this, SLOT (resetWorkingCopy()));
   
+  save_to_original = new QPushButton();
+  save_to_original->setText("Save working copy to original");
+  QObject::connect(save_to_original, SIGNAL(clicked()), this, SLOT (saveToOriginal()));
+  
   draw_black_line = new QPushButton();
   draw_black_line->setText("Draw a black line");
   QObject::connect(draw_black_line, SIGNAL(clicked()), this, SLOT (drawBlackLine()));
@@ -383,12 +406,12 @@ void ImageViewer::generateControlPanels() {
   //QObject::connect(lineSlider, SIGNAL(valueChanged(int)), this, SLOT (drawRainbowCross()));
   
   task_tab1->addWidget(reset_working_copy);
+  task_tab1->addWidget(save_to_original);
   task_tab1->addWidget(monochrome);
   task_tab1->addWidget(new QLabel("Let's draw something!"));
   task_tab1->addWidget(draw_black_line);
   task_tab1->addWidget(draw_rainbow_cross);
   task_tab1->addWidget(diagonal_cross);
-  task_tab1->addWidget(new QLabel("This will not stop unless process is killed."));
   task_tab1->addWidget(line_slider);
   task_tab1->addWidget(new QLabel("Sets the width of the cross."));
 
diff --git a/imageviewer-qt4.h b/imageviewer-qt4.h
index 4e5e0e4..2ad91ed 100644
--- a/imageviewer-qt4.h
+++ b/imageviewer-qt4.h
@@ -80,7 +80,8 @@ class ImageViewer : public QMainWindow {
     QPushButton* diagonal_cross;
     QPushButton* monochrome;
     QPushButton* reset_working_copy;
-
+    QPushButton* save_to_original;
+    
     QSlider* line_slider;
 
     // Second task tab
@@ -121,6 +122,7 @@ class ImageViewer : public QMainWindow {
     void adjustContrast(int c);
     void convertToMonochrome();
     void resetWorkingCopy();
+    void saveToOriginal();
     void robustAutomaticContrastAdaption(int c_param);
     void linearHistogrammAdaption();