diff --git a/build/mobile.cfg b/build/mobile.cfg
index bfe4543412..b41f0bd04c 100644
--- a/build/mobile.cfg
+++ b/build/mobile.cfg
@@ -29,6 +29,7 @@ OpenLayers/Protocol/HTTP.js
 OpenLayers/Protocol/WFS.js
 OpenLayers/Protocol/WFS/v1_0_0.js
 OpenLayers/Strategy/Fixed.js
+OpenLayers/TileManager.js
 
 [exclude]
 
diff --git a/lib/OpenLayers/Map.js b/lib/OpenLayers/Map.js
index b4000c83c9..872e31cce5 100644
--- a/lib/OpenLayers/Map.js
+++ b/lib/OpenLayers/Map.js
@@ -375,7 +375,8 @@ OpenLayers.Map = OpenLayers.Class({
      * APIProperty: tileManager
      * {<OpenLayers.TileManager>} If configured at construction time, the map
      * will use the TileManager to queue image requests and to cache tile image
-     * elements.
+     * elements. Note: make sure that OpenLayers/TileManager.js is included in
+     * your build profile.
      */
     tileManager: null,