diff --git a/test/fixtures/expected/flatten-rgb16-orange.jpg b/test/fixtures/expected/flatten-rgb16-orange.jpg
index f4567011..6371a444 100644
Binary files a/test/fixtures/expected/flatten-rgb16-orange.jpg and b/test/fixtures/expected/flatten-rgb16-orange.jpg differ
diff --git a/test/unit/alpha.js b/test/unit/alpha.js
index 598ab8f2..6c162acf 100644
--- a/test/unit/alpha.js
+++ b/test/unit/alpha.js
@@ -54,7 +54,7 @@ describe('Alpha transparency', function () {
         assert.strictEqual(true, info.size > 0);
         assert.strictEqual(32, info.width);
         assert.strictEqual(32, info.height);
-        fixtures.assertMaxColourDistance(output, fixtures.expected('flatten-rgb16-orange.jpg'), 25);
+        fixtures.assertMaxColourDistance(output, fixtures.expected('flatten-rgb16-orange.jpg'), 10);
         done();
       });
   });