diff --git a/worker.js b/worker.js
index cbe62e3d7..dae87106c 100644
--- a/worker.js
+++ b/worker.js
@@ -60,7 +60,7 @@ var WorkerPDFDoc = (function() {
     
     this.pageCache = [];
     
-    var useWorker = false;
+    var useWorker = true;
     
     if (useWorker) {
       var worker = new Worker("../worker/boot.js");