diff --git a/bin/obj2gltf.js b/bin/obj2gltf.js
index f309c09..0c49de7 100644
--- a/bin/obj2gltf.js
+++ b/bin/obj2gltf.js
@@ -122,7 +122,7 @@ var argv = yargs
             describe : 'The glTF will be saved with the KHR_materials_unlit extension.',
             type : 'boolean',
             default : defaults.unlit
-        },
+        }
     }).parse(args);
 
 if (argv.metallicRoughness + argv.specularGlossiness > 1) {
diff --git a/lib/loadMtl.js b/lib/loadMtl.js
index e8a30b6..9d10240 100644
--- a/lib/loadMtl.js
+++ b/lib/loadMtl.js
@@ -25,7 +25,6 @@ module.exports = loadMtl;
  *
  * @param {String} mtlPath Path to the .mtl file.
  * @param {Object} options The options object passed along from lib/obj2gltf.js
- * @param {Boolean} options.hasNormals Whether the model has normals.
  * @returns {Promise} A promise resolving to an array of glTF materials with Texture objects stored in the texture slots.
  *
  * @private
@@ -733,4 +732,4 @@ function convertTraditionalToMetallicRoughness(material) {
 
     material.specularColor = [metallicFactor, metallicFactor, metallicFactor, 1.0];
     material.specularShininess = roughnessFactor;
-}
\ No newline at end of file
+}
diff --git a/specs/lib/obj2gltfSpec.js b/specs/lib/obj2gltfSpec.js
index bb324b5..eec6c6c 100644
--- a/specs/lib/obj2gltfSpec.js
+++ b/specs/lib/obj2gltfSpec.js
@@ -184,17 +184,4 @@ describe('obj2gltf', function() {
             obj2gltf(texturedObjPath, options);
         }).toThrowDeveloperError();
     });
-
-    it('adds KHR_materials_unlit to materials if unlit is set', function(done) {
-        var options = {
-            unlit : true
-        };
-        expect(obj2gltf(texturedObjPath, options)
-            .then(function(glb) {
-                for(var i = 0;i < glb.materials.length; i++) {
-                    var material = glb.materials[i];
-                    expect(material.extensions.KHR_materials_unlit).toBeDefined();
-                }
-            }), done).toResolve();
-    });
 });