diff --git a/test/fixtures/person.jpg b/test/fixtures/person.jpg
index 4f71881c5584d8..96d46888d76c19 100644
Binary files a/test/fixtures/person.jpg and b/test/fixtures/person.jpg differ
diff --git a/test/fixtures/person.jpg.gz b/test/fixtures/person.jpg.gz
index 71788ed1cb97c5..0d3239a3c84229 100644
Binary files a/test/fixtures/person.jpg.gz and b/test/fixtures/person.jpg.gz differ
diff --git a/test/parallel/test-zlib-params.js b/test/parallel/test-zlib-params.js
index f349c8dbd0afec..d745a5456a2f7a 100644
--- a/test/parallel/test-zlib-params.js
+++ b/test/parallel/test-zlib-params.js
@@ -6,13 +6,13 @@ var path = require('path');
 var fs = require('fs');
 
 var file = fs.readFileSync(path.resolve(common.fixturesDir, 'person.jpg')),
-    chunkSize = 24 * 1024,
+    chunkSize = 12 * 1024,
     opts = { level: 9, strategy: zlib.Z_DEFAULT_STRATEGY },
     deflater = zlib.createDeflate(opts);
 
 var chunk1 = file.slice(0, chunkSize),
     chunk2 = file.slice(chunkSize),
-    blkhdr = new Buffer([0x00, 0x48, 0x82, 0xb7, 0x7d]),
+    blkhdr = new Buffer([0x00, 0x5a, 0x82, 0xa5, 0x7d]),
     expected = Buffer.concat([blkhdr, chunk2]),
     actual;