diff --git a/lib/ace/mode/javascript_worker_test.js b/lib/ace/mode/javascript_worker_test.js
index fe482d5c..b8b43cba 100644
--- a/lib/ace/mode/javascript_worker_test.js
+++ b/lib/ace/mode/javascript_worker_test.js
@@ -74,7 +74,7 @@ module.exports = {
         assert.equal(error.text, "Unclosed string.");
         assert.equal(error.type, "error");
         assert.equal(error.row, 0);
-        assert.equal(error.column, 0);
+        assert.equal(error.column, 2);
     },
 
     "test another invalid string": function() {
@@ -86,7 +86,7 @@ module.exports = {
         assert.equal(error.text, "Unclosed string.");
         assert.equal(error.type, "error");
         assert.equal(error.row, 0);
-        assert.equal(error.column, 3);
+        assert.equal(error.column, 4);
     }
 };
 
diff --git a/lib/ace/worker/worker_client.js b/lib/ace/worker/worker_client.js
index 7ef4c502..3411d509 100644
--- a/lib/ace/worker/worker_client.js
+++ b/lib/ace/worker/worker_client.js
@@ -116,6 +116,7 @@ var WorkerClient = function(topLevelNamespaces, mod, classname) {
 
     this.terminate = function() {
         this._emit("terminate", {});
+        this.deltaQueue = null;
         this.$worker.terminate();
         this.$worker = null;
         this.$doc.removeEventListener("change", this.changeListener);
@@ -220,6 +221,6 @@ var UIWorkerClient = function(topLevelNamespaces, mod, classname) {
 UIWorkerClient.prototype = WorkerClient.prototype;
 
 exports.UIWorkerClient = UIWorkerClient;
-exports.WorkerClient = UIWorkerClient;
+exports.WorkerClient = WorkerClient;
 
 });