diff --git a/tests/EnumTest.php b/tests/EnumTest.php
index cb08d29..8899425 100755
--- a/tests/EnumTest.php
+++ b/tests/EnumTest.php
@@ -303,8 +303,8 @@ private function assertJsonEqualsJson($json1, $json2)
     public function testSerialize()
     {
         // split string for Pretty CI: "Line exceeds 120 characters"
-        $bin = '4f3a33303a224d79434c6162735c54657374735c456e756d5c456e756d4669787'.
-            '4757265223a313a7b733a383a22002a0076616c7565223b733a333a22666f6f223b7d';
+        $bin = '4f3a33303a224d79434c6162735c54657374735c456e756d5c456e756d46697874757265223a323a7b733a38' .
+            '3a22002a0076616c7565223b733a333a22666f6f223b733a363a22002a006b6579223b733a333a22464f4f223b7d';
 
         $this->assertEquals($bin, bin2hex(serialize(EnumFixture::FOO())));
     }