diff --git a/tests/test_pregrader.py b/tests/test_pregrader.py
index 1108ab9d7bb168abc18d0d6b7b847b01b74dcd69..b93be887772c49b998d1f7f0bdc6b8b8823fefe0 100644
--- a/tests/test_pregrader.py
+++ b/tests/test_pregrader.py
@@ -20,11 +20,11 @@ def scanned_image(datadir):
 @pytest.fixture
 def scanned_image_keypoints(scanned_image):
     corner_markers = scans.find_corner_marker_keypoints(scanned_image)
-    top_left_point, fixed_corner_keypoints = images.fix_corner_markers(corner_markers, scanned_image.shape)
-    return top_left_point
+    fixed_corner_keypoints = images.fix_corner_markers(corner_markers, scanned_image.shape)
+    return fixed_corner_keypoints
 
 
 @pytest.mark.parametrize('box_coords, result', [((346, 479), True), ((370, 479), False), ((393, 479), True),
                                                 ((416, 479), True), ((439, 479), True), ((155, 562), True)],)
 def test_ideal_crops(datadir, box_coords, result, scanned_image_keypoints, scanned_image):
-    assert pregrader.box_is_filled(box_coords, scanned_image, scanned_image_keypoints) == result
+    assert pregrader.box_is_filled(box_coords, scanned_image, scanned_image_keypoints[0]) == result