diff --git a/tests/ApplicationDefaultCredentialsTest.php b/tests/ApplicationDefaultCredentialsTest.php
index d0cff5a19..1e8a378ef 100644
--- a/tests/ApplicationDefaultCredentialsTest.php
+++ b/tests/ApplicationDefaultCredentialsTest.php
@@ -167,7 +167,7 @@ public function testImpersonatedServiceAccountCredentials()
             null,
             'a default scope'
         );
-      
+
         $this->assertInstanceOf(ImpersonatedServiceAccountCredentials::class, $creds);
         $this->assertEquals('service_account_name@namespace.iam.gserviceaccount.com', $creds->getClientName());