diff --git a/app/sw.pwa.js b/app/sw.pwa.js
new file mode 100644
index 00000000..81c3e1f9
--- /dev/null
+++ b/app/sw.pwa.js
@@ -0,0 +1,2 @@
+//PWA用
+self.addEventListener('fetch', function(e) {})
\ No newline at end of file
diff --git a/app/view/make/make.js b/app/view/make/make.js
index 688b4b26..06eff2ff 100644
--- a/app/view/make/make.js
+++ b/app/view/make/make.js
@@ -139,7 +139,7 @@ function main(ver, basefile, pwa) {
 			source = source.replace(/@@lang@@/g, lang)
 			source = source.replace(/@@langlist@@/g, langstr)
 			if(pwa) {
-				source = source.replace(/@@pwa@@/g, '<script>var pwa = true;</script>')
+				source = source.replace(/@@pwa@@/g, `<script>var pwa = true;"serviceWorker"in navigator&&navigator.serviceWorker.register("/sw.pwa.js").then(e=>{});</script>`)
 				source = source.replace(/@@node_base@@/g, 'dependencies')
 			} else {
 				source = source.replace(/@@pwa@@/g, '<script>var pwa = false;</script>')