diff --git a/bin/obj2gltf.js b/bin/obj2gltf.js
index 00f1929..e681d18 100644
--- a/bin/obj2gltf.js
+++ b/bin/obj2gltf.js
@@ -13,6 +13,7 @@ if (process.argv.length < 3 || defined(argv.h) || defined(argv.help)) {
     console.log('  -b, --binary            Output binary glTF');
     console.log('  -e, --embed             Embed glTF resources into a single file');
     console.log('  -h, --help              Display this help');
+    console.log('      --ao                Apply ambient occlusion to the converted model');
     process.exit(0);
 }
 
@@ -21,6 +22,7 @@ var outputPath = defaultValue(argv._[1], defaultValue(argv.o, argv.output));
 var binary = defaultValue(defaultValue(argv.b, argv.binary), false);
 var embed = defaultValue(defaultValue(argv.e, argv.embed), false);
 var quantize = defaultValue(defaultValue(argv.q, argv.quantize), false); // Undocumented option
+var ao = defaultValue(argv.ao, false);
 
 if (!defined(objFile)) {
     throw new Error('-i or --input argument is required. See --help for details.');
@@ -31,7 +33,8 @@ console.time('Total');
 var options = {
     binary : binary,
     embed : embed,
-    quantize : quantize
+    quantize : quantize,
+    ao : ao
 };
 
 convert(objFile, outputPath, options, function() {
diff --git a/lib/convert.js b/lib/convert.js
index f40245a..8ed515a 100644
--- a/lib/convert.js
+++ b/lib/convert.js
@@ -13,6 +13,7 @@ function convert(objFile, outputPath, options, done) {
     var binary = defaultValue(options.binary, false);
     var embed = defaultValue(options.embed, true);
     var quantize = defaultValue(options.quantize, false);
+    var ao = defaultValue(options.ao, false);
 
     if (!defined(objFile)) {
         throw new Error('objFile is required');
@@ -36,10 +37,12 @@ function convert(objFile, outputPath, options, done) {
 
     parseObj(objFile, inputPath, function(data) {
         createGltf(data, inputPath, modelName, function(gltf) {
+            var aoOptions = ao ? {} : undefined;
             var options = {
                 binary : binary,
                 embed : embed,
                 quantize : quantize,
+                aoOptions : aoOptions,
                 createDirectory : false,
                 basePath : inputPath
             };