diff --git a/build/ol.json b/build/ol.json
index 65b952831c..30b7d124c1 100644
--- a/build/ol.json
+++ b/build/ol.json
@@ -29,6 +29,7 @@
     "exports/ol/layer/tilelayer.js",
     "exports/ol/map.js",
     "exports/ol/object.js",
+    "exports/ol/overlay/overlay.js",
     "exports/ol/projection.js",
     "exports/ol/source/mapquest.js",
     "exports/ol/source/openstreetmap.js",
diff --git a/exports/ol/overlay/overlay.js b/exports/ol/overlay/overlay.js
new file mode 100644
index 0000000000..7827ab64b7
--- /dev/null
+++ b/exports/ol/overlay/overlay.js
@@ -0,0 +1,3 @@
+goog.require('ol.overlay.Overlay');
+
+goog.exportSymbol('ol.overlay.Overlay', ol.overlay.Overlay);