diff --git a/lib/SimpleSAML/XML/Shib13/AuthnRequest.php b/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
index ccb4d94e0fc792cdf39cf0872b228848df33774a..651b87512fb7440862e4a9055aa0efeed582b291 100644
--- a/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
+++ b/lib/SimpleSAML/XML/Shib13/AuthnRequest.php
@@ -27,14 +27,10 @@ class SimpleSAML_XML_Shib13_AuthnRequest {
 		return $this->issuer;
 	}
 
-	public function createRedirect($destination, $shire = NULL) {
+	public function createRedirect($destination, $shire) {
 		$metadata = SimpleSAML_Metadata_MetaDataStorageHandler::getMetadataHandler();
 		$idpmetadata = $metadata->getMetaDataConfig($destination, 'shib13-idp-remote');
 
-		if ($shire === NULL) {
-			$shire = $metadata->getGenerated('AssertionConsumerService', 'shib13-sp-hosted');
-		}
-
 		$desturl = $idpmetadata->getDefaultEndpoint('SingleSignOnService', array('urn:mace:shibboleth:1.0:profiles:AuthnRequest'));
 		$desturl = $desturl['Location'];