diff --git a/serviceworker.js b/serviceworker.js
index 0dcb79a..8796e69 100644
--- a/serviceworker.js
+++ b/serviceworker.js
@@ -1,10 +1,10 @@
-var cacheName = 'takarasagashi-2025_1223';
+var cacheName = 'takarasagashi-2025-1223';
 var filesToCache = [
     './',
     './loc-chase2.html',
     './loc-chase2.js',
-    './pwa-sample-192.png'
-    './pwa-sample/ico'
+    './pwa-sample^192.png',
+    './pwa-sample.ico',
 ];
 self.addEventListener('install', function(event) {
     console.log('ServiceWorker installing');