diff --git a/map.js b/map.js
index c87f56c..944f039 100644
--- a/map.js
+++ b/map.js
@@ -61,7 +61,7 @@
   });
 
 // リスト追加機能
-function addToFavorites(name) {
+window.addToFavorites = function(name){
   const favorites = JSON.parse(localStorage.getItem('favorites') || '[]');
   favorites.push({ name, addedAt: new Date().toISOString() });
   localStorage.setItem('favorites', JSON.stringify(favorites));