diff --git a/static/pwa/pwa.js b/static/pwa/pwa.js
deleted file mode 100644
index d4378025d..000000000
--- a/static/pwa/pwa.js
+++ /dev/null
@@ -1,3 +0,0 @@
-self.addEventListener('fetch', function(event) {
-  // console.log(`start server worker`); // service worker started
-});
diff --git a/static/pwa/serviceWorker.js b/static/pwa/serviceWorker.js
index 87c2fdd9e..4b30ed3e9 100644
--- a/static/pwa/serviceWorker.js
+++ b/static/pwa/serviceWorker.js
@@ -1,7 +1,11 @@
+// register service worker
 if ('serviceWorker' in navigator) {
-  navigator.serviceWorker.register('./public/pwa/serviceWorker.js').then(function(reg) {
-    // console.log('Successfully registered service worker', reg);
+  navigator.serviceWorker.register('./serviceWorker.js').then(function(reg) {
+    // reg.scope must be '/' to allow '/' as start url
   }).catch(function(err) {
     // console.warn('Error whilst registering service worker', err);
   });
 }
+
+// used to fetch the manifest file
+self.addEventListener('fetch', () => {});