diff --git a/src/core/worker.js b/src/core/worker.js
index 45c8e33cc..567343864 100644
--- a/src/core/worker.js
+++ b/src/core/worker.js
@@ -335,7 +335,7 @@ var WorkerMessageHandler = {
 
       // check if Uint8Array can be sent to worker
       if (!(data instanceof Uint8Array)) {
-        handler.send('test', 'main', false);
+        handler.send('test', false);
         return;
       }
       // making sure postMessage transfers are working
diff --git a/src/display/api.js b/src/display/api.js
index ce3713afa..3bd0a60ee 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -1480,8 +1480,7 @@ var PDFWorker = (function PDFWorkerClosure() {
               terminateEarly();
               return; // worker was destroyed
             }
-            var supportTypedArray = data && data.supportTypedArray;
-            if (supportTypedArray) {
+            if (data && data.supportTypedArray) {
               this._messageHandler = messageHandler;
               this._port = worker;
               this._webWorker = worker;