diff --git a/test/unit/MailHelperTest.php b/test/unit/MailHelperTest.php
index 3706828a1..93cd4467a 100644
--- a/test/unit/MailHelperTest.php
+++ b/test/unit/MailHelperTest.php
@@ -82,7 +82,7 @@ public function testEmailAddress()
     	$email->setEmailAddress('test@example.com@wrong');
     }
 
-    public function testIfPersonalizationSerializationIsNotReturningNullObject()
+    public function testJsonSerializeOverPersonalizationsShouldNotReturnNull()
     {
         $objEmail = new \SendGrid\Mail\Mail();