diff --git a/vtm/src/org/oscim/renderer/MapRenderer.java b/vtm/src/org/oscim/renderer/MapRenderer.java
index 57f19c00..a5c54836 100644
--- a/vtm/src/org/oscim/renderer/MapRenderer.java
+++ b/vtm/src/org/oscim/renderer/MapRenderer.java
@@ -295,7 +295,8 @@ public class MapRenderer {
 	}
 
 	public void onSurfaceChanged(int width, int height) {
-		log.debug("SurfaceChanged: " + mNewSurface + " " + width + "x" + height);
+		log.debug("onSurfaceChanged: new={}, {}x{}",
+		          mNewSurface, width, height);
 
 		if (width <= 0 || height <= 0)
 			return;
@@ -392,6 +393,8 @@ public class MapRenderer {
 	 * Bind VBO for a simple quad. Handy for simple custom RenderLayers
 	 * Vertices: float[]{ -1, -1, -1, 1, 1, -1, 1, 1 }
 	 * 
+	 * GL.glDrawArrays(GL20.GL_TRIANGLE_STRIP, 0, 4);
+	 * 
 	 * @param bind - true to activate, false to unbind
 	 */
 	public static void bindQuadVertexVBO(int location, boolean bind) {