diff --git a/x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/saml/SamlAuthenticatorTests.java b/x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/saml/SamlAuthenticatorTests.java
index f6caca1b0a2..f18a8a74ae4 100644
--- a/x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/saml/SamlAuthenticatorTests.java
+++ b/x-pack/plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/saml/SamlAuthenticatorTests.java
@@ -403,7 +403,7 @@ public class SamlAuthenticatorTests extends SamlTestCase {
         final String xml = getSimpleResponseAsString(now);
 
         // Encrypting with different cert instead of sp cert will mean that the SP cannot decrypt
-        final Response encrypted = encryptAttributes(xml, readKeyPair("RSA_4096_updated"));
+        final Response encrypted = encryptAttributes(xml, readKeyPair("ENCRYPTION_RSA_4096_updated"));
         final String encryptedString = SamlUtils.getXmlContent(encrypted, false);
         assertThat(encryptedString, not(equalTo(xml)));