diff --git a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.cc b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.cc
index e0fdd02e..d8638496 100644
--- a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.cc
+++ b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.cc
@@ -545,8 +545,6 @@ open_vd_prog_mesh(const char* _filename)
 }
 
 
-
-
 void VDPMSynthesizerViewerWidget::keyPressEvent(QKeyEvent* _event)
 {
   switch (_event->key())
@@ -559,14 +557,14 @@ void VDPMSynthesizerViewerWidget::keyPressEvent(QKeyEvent* _event)
       updateGL();
       break;
       
-    case Key_Plus:
+    case Key_Minus:
       viewing_parameters_.increase_tolerance();
       std::cout << "Scree-space error tolerance^2 is increased by " 
 		<< viewing_parameters_.tolerance_square() << std::endl;
       updateGL();
       break;
-      
-    case Key_Minus:
+    
+    case Key_Plus:
       viewing_parameters_.decrease_tolerance();
       std::cout << "Screen-space error tolerance^2 is decreased by " 
 		<< viewing_parameters_.tolerance_square() << std::endl;
diff --git a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.hh b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.hh
index f557d0ec..2042b1ae 100644
--- a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.hh
+++ b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/VDPMSynthesizerViewerWidget.hh
@@ -116,7 +116,7 @@ public:
   VDPMSynthesizerViewerWidget(QWidget* _parent=0, const char* _name=0)
     : MeshViewerWidget(_parent)
   {
-    adaptive_mode_ = false;
+    adaptive_mode_ = true;
   }
 
   ~VDPMSynthesizerViewerWidget()
diff --git a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/vdpmsynthesizer.cc b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/vdpmsynthesizer.cc
index 6e8d5504..9a2e7d9f 100644
--- a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/vdpmsynthesizer.cc
+++ b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/vdpmsynthesizer.cc
@@ -88,6 +88,7 @@ int main(int argc, char **argv)
 	    << "       Plus  : Refine mesh\n"
 	    << "       Home  : Coarsen down to base mesh\n"
 	    << "       End   : Refine up to finest mesh\n"
+	    << "       a     : Switch off / on adaptive refinement\n"
 	    << "\n";
 	    
   return app.exec();