diff --git a/pxtarget.json b/pxtarget.json
index d4c44209..67c953ff 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -12,6 +12,9 @@
         "libs/ev3"
     ],
     "simulator": {
+      "headless": true
+    },
+    "DISABLED-simulator": {
         "autoRun": true,
         "streams": true,
         "aspectRatio": 1.0,