diff --git a/test/Test_Core.ml b/test/Test_Core.ml
index a739adf5..c25f38bc 100644
--- a/test/Test_Core.ml
+++ b/test/Test_Core.ml
@@ -8,8 +8,8 @@ let test_antialiasing () =
   let diffPixels, diffPercentage, _ =
     PNG_Diff.compare img1 img2 ~antialiasing:true ()
   in
-  check int "diffPixels" 46 diffPixels;
-  check (float 0.001) "diffPercentage" 0.115 diffPercentage
+  check int "diffPixels" 38 diffPixels;
+  check (float 0.001) "diffPercentage" 0.095 diffPercentage
 
 let test_different_sized_aa_images () =
   let img1 = Png.IO.loadImage "test-images/aa/antialiasing-on.png" in
@@ -17,8 +17,8 @@ let test_different_sized_aa_images () =
   let diffPixels, diffPercentage, _ =
     PNG_Diff.compare img1 img2 ~antialiasing:true ()
   in
-  check int "diffPixels" 417 diffPixels;
-  check (float 0.01) "diffPercentage" 1.0425 diffPercentage
+  check int "diffPixels" 0 diffPixels;
+  check (float 0.01) "diffPercentage" 0.0 diffPercentage
 
 let test_threshold () =
   let img1 = Png.IO.loadImage "test-images/png/orange.png" in