diff --git a/mbgl-index.html b/mbgl-index.html
index 3fd9d8c..c8ecf7b 100644
--- a/mbgl-index.html
+++ b/mbgl-index.html
@@ -27,7 +27,7 @@
 <div id="map-wrapper">
   <div id='map'></div>
   <div id="map-3d-message-overlay" class="kartta-hidden">
-    Choose a location in the map to switch to 3D view
+    Choose a location in the map to switch to 3D view.  Then use mouse and W, A, S, D keys to move.
     <div id="cancel-3d-button">Cancel</div>
   </div>
 </div>