diff --git a/web_assets/functions.js b/web_assets/functions.js
index c109603..e2d1123 100644
--- a/web_assets/functions.js
+++ b/web_assets/functions.js
@@ -172,7 +172,7 @@ function drawMapControls() {
             items.push({"label": item.label, "checked": item.checked,
                 "action": function(n, l, checked) {
                     jQuery.each(regionCollection[l], function(i,elem) {
-                            elem.setMap(checked ? map : null);
+                            elem.setMap(checked ? map : null); // Thanks to LeastWeasel for this line!
                         });
                 }});
         }