diff --git a/demo2.cpp b/demo2.cpp
index 84c8b03..c3badfd 100644
--- a/demo2.cpp
+++ b/demo2.cpp
@@ -8,7 +8,9 @@
 */
 
 #define FPS 60
-#define PLAYER_SPEED (UNITS_PER_SQUARE * 3)
+#define HEAD_BOB_HEIGHT 200
+#define HEAD_BOB_STEP 20
+#define PLAYER_SPEED (5 * UNITS_PER_SQUARE)
 
 #include "general.hpp"
 
@@ -809,10 +811,14 @@ void draw()
   c.maxSteps = 20;
   c.computeTextureCoords = 1;
 
-player.mCamera.height += player.mHeadBob;
-renderSimple(player.mCamera,floorHeightAt,textureAt,pixelFunc,c);
-//  render(player.mCamera,floorHeightAt,0,textureAt,pixelFunc,c);
-player.mCamera.height -= player.mHeadBob;
+  player.mCamera.height += player.mHeadBob;
+  renderSimple(player.mCamera,floorHeightAt,textureAt,pixelFunc,c);
+
+  /* this would achieve more or less the same (less shaky head bob), 
+     for a cost of a few FPS: */
+  // render(player.mCamera,floorHeightAt,0,textureAt,pixelFunc,c);
+
+  player.mCamera.height -= player.mHeadBob;
 
   if (shotFired)
   {