diff --git a/Tests/test_imageops.py b/Tests/test_imageops.py
index 170ad6b3d..ec6a55e0e 100644
--- a/Tests/test_imageops.py
+++ b/Tests/test_imageops.py
@@ -304,5 +304,5 @@ def test_exif_transpose():
 def test_autocontrast_cutoff():
     # Test the cutoff argument of autocontrast
     with Image.open("Tests/images/bw_gradient.png") as img:
-        assert  ImageOps.autocontrast(img, cutoff=10).getdata() == ImageOps.autocontrast(img, cutoff=(10,10)).getdata()
-        assert  ImageOps.autocontrast(img, cutoff=10).getdata() != ImageOps.autocontrast(img, cutoff=(1,10)).getdata()
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+        assert  ImageOps.autocontrast(img, cutoff=10).histogram() == ImageOps.autocontrast(img, cutoff=(10,10)).histogram()
+        assert  ImageOps.autocontrast(img, cutoff=10).histogram() != ImageOps.autocontrast(img, cutoff=(1,10)).histogram()
\ No newline at end of file