diff --git a/assets/themes/maps/maps.json b/assets/themes/maps/maps.json
index 404aa0f3df..1da32d5146 100644
--- a/assets/themes/maps/maps.json
+++ b/assets/themes/maps/maps.json
@@ -41,7 +41,8 @@
   "startLon": 0,
   "startZoom": 1,
   "widenFactor": 5,
+  "defaultBackgroundId": "CartoDB.Positron",
   "layers": [
     "map"
   ]
-}
\ No newline at end of file
+}