diff --git a/src/core/worker.js b/src/core/worker.js
index 567343864..106d31bcb 100644
--- a/src/core/worker.js
+++ b/src/core/worker.js
@@ -629,9 +629,8 @@ var WorkerMessageHandler = {
           newPdfManager.terminate();
           throw new Error('Worker was terminated');
         }
-
         pdfManager = newPdfManager;
-        handler.send('PDFManagerReady', null);
+
         pdfManager.onLoadedStream().then(function(stream) {
           handler.send('DataLoaded', { length: stream.bytes.byteLength, });
         });
diff --git a/src/display/api.js b/src/display/api.js
index 3bd0a60ee..a9415b071 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -1834,9 +1834,6 @@ var WorkerTransport = (function WorkerTransportClosure() {
         this.downloadInfoCapability.resolve(data);
       }, this);
 
-      messageHandler.on('PDFManagerReady', function transportPage(data) {
-      }, this);
-
       messageHandler.on('StartRenderPage', function transportRender(data) {
         if (this.destroyed) {
           return; // Ignore any pending requests if the worker was terminated.