diff --git a/modules/ui/submap.js b/modules/ui/submap.js
index 0a903443..827efc0e 100644
--- a/modules/ui/submap.js
+++ b/modules/ui/submap.js
@@ -106,6 +106,7 @@ window.UISubmap = (function () {
       promoteTowns: false,
       smoothHeightMap: false,
       rescaleStyles: false,
+      scale: 1,
       projection,
       inverse
     });