diff --git a/tests/test_images.py b/tests/test_images.py
index 1a574f3e..4649cde6 100644
--- a/tests/test_images.py
+++ b/tests/test_images.py
@@ -156,7 +156,7 @@ def test_image_outputs(self):
                 ],
                 standalone_mode=False,
             )
-            assert png.read_bytes().startswith(b"\x89PNG\r\n")
+            assert png.read_bytes().startswith(b"\x89PNG"), png.read_bytes()[0:10]
             assert svg.read_bytes().startswith(b"<?xml"), svg.read_bytes()[0:5]
             assert svg.read_bytes().startswith(b"<?xml"), svg.read_bytes()[0:5]
             assert dot.read_bytes().startswith(b"/* Ge"), dot.read_bytes()[0:5]