diff --git a/python-sdk/nuscenes/scripts/export_2d_annotations_as_json.py b/python-sdk/nuscenes/scripts/export_2d_annotations_as_json.py
index 105fbf9..cd2741f 100755
--- a/python-sdk/nuscenes/scripts/export_2d_annotations_as_json.py
+++ b/python-sdk/nuscenes/scripts/export_2d_annotations_as_json.py
@@ -191,7 +191,7 @@ def main(args):
     parser.add_argument('--dataroot', type=str, default='/data/sets/nuscenes', help="Path where nuScenes is saved.")
     parser.add_argument('--version', type=str, default='v1.0-trainval', help='Dataset version.')
     parser.add_argument('--filename', type=str, default='image_annotations.json', help='Output filename.')
-    parser.add_argument('--visibilities', type=str, default=['1', '2', '3', '4'],
+    parser.add_argument('--visibilities', type=str, default=['','1', '2', '3', '4'],
                         help='Visibility bins, the higher the number the higher the visibility.', nargs='+')
     args = parser.parse_args()