diff --git a/test.py b/test.py
index f3d0ec6..18f8e58 100644
--- a/test.py
+++ b/test.py
@@ -18,8 +18,7 @@ def test(data,
          verbose=False,
          model=None,
          dataloader=None,
-         fast=False,
-         save_dir='.',
+         save_dir='',
          merge=False):
 
     # Initialize/load model and set device
@@ -29,7 +28,7 @@ def test(data,
         device = torch_utils.select_device(opt.device, batch_size=batch_size)
 
         # Remove previous
-        for f in glob.glob(f'{save_dir}/test_batch*.jpg'):
+        for f in glob.glob(str(Path(save_dir) / 'test_batch*.jpg')):
             os.remove(f)
 
         # Load model
@@ -163,10 +162,11 @@ def test(data,
 
         # Plot images
         if batch_i < 1:
-            f = os.path.join(save_dir, 'test_batch%g_gt.jpg' % batch_i)  # filename
-            plot_images(img, targets, paths, f, names)  # ground truth
-            f = os.path.join(save_dir,'test_batch%g_pred.jpg' % batch_i)
-            plot_images(img, output_to_target(output, width, height), paths, f, names)  # predictions
+            
+            f = Path(save_dir) / ('test_batch%g_gt.jpg' % batch_i)  # filename
+            plot_images(img, targets, paths, str(f), names)  # ground truth
+            f = Path(save_dir) / ('test_batch%g_pred.jpg' % batch_i)
+            plot_images(img, output_to_target(output, width, height), paths, str(f), names)  # predictions
 
     # Compute statistics
     stats = [np.concatenate(x, 0) for x in zip(*stats)]  # to numpy