diff --git a/src/com/homelinux/holtrop/opengltest/MyRenderer.java b/src/com/homelinux/holtrop/opengltest/MyRenderer.java
index 54d09d9..0988779 100644
--- a/src/com/homelinux/holtrop/opengltest/MyRenderer.java
+++ b/src/com/homelinux/holtrop/opengltest/MyRenderer.java
@@ -197,13 +197,16 @@ public class MyRenderer implements GLSurfaceView.Renderer
 
     public boolean onTouchEvent(MotionEvent e)
     {
-        if (e.getAction() == MotionEvent.ACTION_DOWN)
+        if (e.getAction() == MotionEvent.ACTION_DOWN ||
+            e.getAction() == MotionEvent.ACTION_MOVE)
         {
             float x = m_aspect * ((e.getX() / (float) m_width) * 2.0f - 1.0f);
             float y = -((e.getY() / (float) m_height) * 2.0f - 1.0f);
 
             m_x = x;
             m_y = y;
+
+            return true;
         }
 
         return false;