diff --git a/tests/SAML2/XML/saml/EncryptedAssertionTest.php b/tests/SAML2/XML/saml/EncryptedAssertionTest.php
index 60058d88d..abd32ce1f 100644
--- a/tests/SAML2/XML/saml/EncryptedAssertionTest.php
+++ b/tests/SAML2/XML/saml/EncryptedAssertionTest.php
@@ -92,7 +92,7 @@ public static function tearDownAfterClass(): void
     public function testMarshalling(): void
     {
         $transforms = new Transforms(
-            [new Transform(C::XPATH10_URI, new XPath('self::xenc:CipherValue[@Id="example1"]', ['xenc' => C::NS_XENC]))],
+            [new Transform(C::XPATH10_URI, new XPath('self::xenc:CipherValue[@Id="example1"]'))],
         );
 
         $retrievalMethod = new RetrievalMethod($transforms, '#Encrypted_KEY_ID', C::XMLENC_ENCRYPTEDKEY);