diff --git a/js/background.js b/js/background.js
index 18d1b2cfd3a..22f08f14e8b 100644
--- a/js/background.js
+++ b/js/background.js
@@ -33,7 +33,7 @@
     });
 
     // start a background worker for ecc
-    textsecure.protocol_wrapper.startWorker();
+    textsecure.protocol_wrapper.startWorker('/js/libsignal-protocol-worker.js');
 
     extension.onLaunched(function() {
         console.log('extension launched');
diff --git a/js/libtextsecure.js b/js/libtextsecure.js
index 85d420b6ee5..f0712b4f7fe 100644
--- a/js/libtextsecure.js
+++ b/js/libtextsecure.js
@@ -35429,8 +35429,8 @@ Internal.SessionLock.queueJobForNumber = function queueJobForNumber(number, runJ
 
     window.textsecure = window.textsecure || {};
     window.textsecure.protocol_wrapper = {
-        startWorker: function() {
-            protocolInstance.startWorker('/js/libsignal-protocol-worker.js');
+        startWorker: function(url) {
+            protocolInstance.startWorker(url);
         },
         stopWorker: function() {
             protocolInstance.stopWorker();
diff --git a/libtextsecure/protocol_wrapper.js b/libtextsecure/protocol_wrapper.js
index 834a806cd38..1714ff19396 100644
--- a/libtextsecure/protocol_wrapper.js
+++ b/libtextsecure/protocol_wrapper.js
@@ -11,8 +11,8 @@
 
     window.textsecure = window.textsecure || {};
     window.textsecure.protocol_wrapper = {
-        startWorker: function() {
-            protocolInstance.startWorker('/js/libsignal-protocol-worker.js');
+        startWorker: function(url) {
+            protocolInstance.startWorker(url);
         },
         stopWorker: function() {
             protocolInstance.stopWorker();