diff --git a/javascript/sidebar&boxes.js b/javascript/sidebar&boxes.js
index a4c065498974cfd8411974ca8b235db7d7f7d2ca..75b45b648a934b2d149e11a7f7d54d0715d03262 100644
--- a/javascript/sidebar&boxes.js
+++ b/javascript/sidebar&boxes.js
@@ -61,7 +61,7 @@ function closeBox(id) { // Lukker aktuell boks og justerer siden motsatt av hva
 
 function isPolygon(layer) {
     var objects = layer["features"];
-    for (var i = 0; i < objects.lenght; i++) {
+    for (var i = 0; i < objects.lenght(); i++) {
         if (objects[i]["geometry"]["type"] == "Polygon") {
             return true;
         }