diff --git a/tests/modules/core/lib/Auth/Process/CardinalitySingleTest.php b/tests/modules/core/lib/Auth/Process/CardinalitySingleTest.php
index ccc03bf7c7bbabc640afe0febaf30af2c5a88888..5e9d993b2aa1301ccd28e57c44acebaf2ad2b663 100644
--- a/tests/modules/core/lib/Auth/Process/CardinalitySingleTest.php
+++ b/tests/modules/core/lib/Auth/Process/CardinalitySingleTest.php
@@ -136,6 +136,6 @@ class Test_Core_Auth_Process_CardinalitySingleTest extends \PHPUnit_Framework_Te
                 'eduPersonPrincipalName' => array('joe@example.com', 'bob@example.net'),
             ),
         );
-        $result = self::processFilter($config, $request);
+        self::processFilter($config, $request);
     }
 }