diff --git a/sw.js b/sw.js
index e834acd..1b1ac2c 100644
--- a/sw.js
+++ b/sw.js
@@ -10,7 +10,7 @@ async function initCache() {
     '/components/nav-menu.js',
     '/components/page-menu.js',
     '/components/dialog.js',
-    '/forms/button-group.js,
+    '/forms/button-group.js',
   ])
 }