diff --git a/source/threejs/threeconverter.js b/source/threejs/threeconverter.js
index 31e4b50..aa24852 100644
--- a/source/threejs/threeconverter.js
+++ b/source/threejs/threeconverter.js
@@ -217,7 +217,7 @@ OV.ConvertModelToThreeMeshes = function (model, params, output, callbacks)
 	let threeMeshes = [];
 	let taskRunner = new OV.TaskRunner ();
 	taskRunner.RunBatch (model.MeshCount (), 100, {
-		runTask : function (firstIndex, lastIndex, ready) {
+		runTask : (firstIndex, lastIndex, ready) => {
 			for (let meshIndex = firstIndex; meshIndex <= lastIndex; meshIndex++) {
 				let mesh = model.GetMesh (meshIndex);
 				if (mesh.TriangleCount () > 0) {
@@ -227,7 +227,7 @@ OV.ConvertModelToThreeMeshes = function (model, params, output, callbacks)
 			}
 			ready ();
 		},
-		onReady : function () {
+		onReady : () => {
 			callbacks.onModelLoaded (threeMeshes);
 		}
 	});
diff --git a/website/o3dv/loader.js b/website/o3dv/loader.js
index 8442fbd..79d5ec9 100644
--- a/website/o3dv/loader.js
+++ b/website/o3dv/loader.js
@@ -34,26 +34,26 @@ OV.InitModelLoader = function (modelLoader, callbacks)
     let errorDialog = null;
     let progressDialog = null;
     modelLoader.Init ({
-        onLoadStart : function () {
+        onLoadStart : () => {
             CloseDialogIfOpen (errorDialog);
             callbacks.onStart ();
             progressDialog = new OV.ProgressDialog ();
             progressDialog.Show ('Loading Model');
         },
-        onImportStart : function () {
+        onImportStart : () => {
             progressDialog.SetText ('Importing Model');
         },
-        onVisualizationStart : function () {
+        onVisualizationStart : () => {
             progressDialog.SetText ('Visualizing Model');
         },
-        onModelFinished : function (importResult, threeMeshes) {
+        onModelFinished : (importResult, threeMeshes) => {
             progressDialog.Hide ();
             callbacks.onFinish (importResult, threeMeshes);
         },
-        onTextureLoaded : function () {
+        onTextureLoaded : () => {
             callbacks.onRender ();
         },
-        onLoadError : function (importError) {
+        onLoadError : (importError) => {
             progressDialog.Hide ();
             errorDialog = OpenErrorDialog (importError);
         },