diff --git a/mapping.js b/mapping.js
index a32cd0b..ac0db51 100644
--- a/mapping.js
+++ b/mapping.js
@@ -120,7 +120,7 @@
       if (isNaN(latNum) || isNaN(lngNum)) continue; //緯度か経度のどちらかが「数値」でなければ、次のcsvの行に行く
       //var ovlLayers  = {};
       var item = desc.split("\\n")[0];
-      var url = desc.match(/\[\[(.+)\]\]/g)[0].substr(2,url.length-3);
+      let url = desc.match(/\[\[(.+)\]\]/g)[0].substr(2,url.length-3);
       marker = L.marker([latNum, lngNum], {
         icon: L.divIcon({
           //html: '<a class="marker">あ</a>',