diff --git a/imageviewer-qt4.cpp b/imageviewer-qt4.cpp
index a3af53d..5046957 100644
--- a/imageviewer-qt4.cpp
+++ b/imageviewer-qt4.cpp
@@ -162,23 +162,6 @@ void ImageViewer::drawRainbowCross(int initialHue=0) {
   }
 }
 
-/**
- * Repeatedly draw the rainbow cross forever.
- * You will need to kill the process manually after triggering this.
- * @brief ImageViewer::acidTrippin
- */
-void ImageViewer::acidTrippin() {
-  logFile << "There is no stop button yet. Kill the process or keep it." << std::endl;
-  renewLogging();
-  int h = 0;
-  while(true) {
-    drawRainbowCross(h);
-    h += 20;
-    if(h > 359) h = 0;
-    qApp->processEvents();
-  }
-}
-
 /**
  * Analyze the image, get average luminance
  * Also fill grayscale_absolute_histogramm
@@ -329,10 +312,6 @@ void ImageViewer::generateControlPanels() {
   draw_rainbow_cross->setText("Draw a rainbow cross");
   QObject::connect(draw_rainbow_cross, SIGNAL(clicked()), this, SLOT (drawRainbowCross()));
 
-  acid_trip = new QPushButton();
-  acid_trip->setText("Start the neverending acid trip!");
-  QObject::connect(acid_trip, SIGNAL(clicked()), this, SLOT (acidTrippin()));
-
   diagonal_cross = new QPushButton();
   diagonal_cross->setText("Draw a diagonal cross");
   QObject::connect(diagonal_cross, SIGNAL(clicked()), this, SLOT (drawDiagonalCross()));
@@ -347,7 +326,6 @@ void ImageViewer::generateControlPanels() {
   task_tab1->addWidget(new QLabel("Let's draw something!"));
   task_tab1->addWidget(draw_black_line);
   task_tab1->addWidget(draw_rainbow_cross);
-  task_tab1->addWidget(acid_trip);
   task_tab1->addWidget(diagonal_cross);
   task_tab1->addWidget(new QLabel("This will not stop unless process is killed."));
   task_tab1->addWidget(line_slider);
diff --git a/imageviewer-qt4.h b/imageviewer-qt4.h
index f323c15..1f79d63 100644
--- a/imageviewer-qt4.h
+++ b/imageviewer-qt4.h
@@ -77,7 +77,6 @@ class ImageViewer : public QMainWindow {
 
     QPushButton* draw_black_line;
     QPushButton* draw_rainbow_cross;
-    QPushButton* acid_trip;
     QPushButton* diagonal_cross;
     QPushButton* monochrome;
 
@@ -111,7 +110,6 @@ class ImageViewer : public QMainWindow {
     void drawBlackLine();
     void drawRainbowCross();
     void drawDiagonalCross();
-    void acidTrippin();
     void analyzeImage();
     void adjustBrightness(int b);
     void adjustContrast(int c);