diff --git a/main.json b/main.json
index 2ca75b3995..315006a62b 100644
--- a/main.json
+++ b/main.json
@@ -10,6 +10,8 @@
 
   "define": {
     // "goog.dom.ASSUME_STANDARDS_MODE": true,
+    // "ol.ENABLE_DOM": false,
+    // "ol.ENABLE_WEBGL": false,
     "goog.DEBUG": false
   },