diff --git a/specs/lib/gltfSpec.js b/specs/lib/gltfSpec.js
index 84d3692..00afa61 100644
--- a/specs/lib/gltfSpec.js
+++ b/specs/lib/gltfSpec.js
@@ -70,7 +70,7 @@ describe('gltf', function() {
 
     it('simple gltf', function(done) {
         var gltf = createGltf(boxObjData);
-        expect(writeUris(gltf, boxGltfUrl, defaultOptions)
+        expect(writeUris(gltf, boxGltfUrl, path.dirname(boxGltfUrl), defaultOptions)
             .then(function() {
                 expect(gltf).toEqual(boxGltf);
             }), done).toResolve();
@@ -79,7 +79,7 @@ describe('gltf', function() {
     it('multiple nodes, meshes, and primitives', function(done) {
         var gltf = createGltf(groupObjData);
 
-        expect(writeUris(gltf, groupGltfUrl, defaultOptions)
+        expect(writeUris(gltf, groupGltfUrl, path.dirname(groupGltfUrl), defaultOptions)
             .then(function() {
                 expect(gltf).toEqual(groupGltf);
                 expect(Object.keys(gltf.materials).length).toBe(3);
diff --git a/specs/lib/obj2gltfSpec.js b/specs/lib/obj2gltfSpec.js
index b152f9f..eda21f7 100644
--- a/specs/lib/obj2gltfSpec.js
+++ b/specs/lib/obj2gltfSpec.js
@@ -29,9 +29,10 @@ describe('obj2gltf', function() {
             .then(function() {
                 var args = spy.calls.first().args;
                 var options = args[2];
+                expect(options.basePath).toBeDefined();
+                delete options.basePath; // This will be a random temp directory
                 expect(options).toEqual({
                     createDirectory : false,
-                    basePath : path.dirname(objPath),
                     binary : false,
                     embed : true,
                     embedImage : true,
@@ -75,9 +76,10 @@ describe('obj2gltf', function() {
             .then(function() {
                 var args = spy.calls.first().args;
                 var options = args[2];
+                expect(options.basePath).toBeDefined();
+                delete options.basePath; // This will be a random temp directory
                 expect(options).toEqual({
                     createDirectory : false,
-                    basePath : path.dirname(objPath),
                     binary : true,
                     embed : false,
                     embedImage : false,