--- a/pydicom/tests/test_pillow_pixel_data.py
+++ b/pydicom/tests/test_pillow_pixel_data.py
@@ -543,6 +543,7 @@ else:
          ], ground_truth_sc_rgb_jpeg_dcmtk_444_YBR_FULL), ]
 
 
+@pytest.mark.xfail(reason="Fails on Debian ATM: https://github.com/pydicom/pydicom/issues/663")
 @pytest.mark.skipif(
     not TEST_JPEG,
     reason=pillow_missing_message)
