diff --git a/cmd/mtwebmapper/web/js/auto-update.js b/cmd/mtwebmapper/web/js/auto-update.js
index 5f739db..69ac090 100644
--- a/cmd/mtwebmapper/web/js/auto-update.js
+++ b/cmd/mtwebmapper/web/js/auto-update.js
@@ -58,12 +58,12 @@ L.Control.AutoUpdate = L.Control.extend({
                     last[xz.X + "#" + xz.Z] = xz;
                 }
                 for (var p = 7; p >= 0; p--) {
-                    var prev = pyramid[p+1]
+                    var prev = pyramid[p+1];
                     var curr = new Object();
                     pyramid[p] = curr;
                     for (var k in prev) {
                         if (prev.hasOwnProperty(k)) {
-                            var oxz = prev[k]
+                            var oxz = prev[k];
                             var nxz = { X: oxz.X >> 1, Z: oxz.Z >> 1 };
                             curr[nxz.X + "#" + nxz.Z] = nxz;
                         }