diff --git a/lib/SimpleSAML/Metadata/MetaDataStorageHandlerMDX.php b/lib/SimpleSAML/Metadata/MetaDataStorageHandlerMDX.php
index 7f61a62d8e00bf7f8995cc1204acccbe382482d7..c917b64e5d510012005ee8a824f48be1044b966b 100644
--- a/lib/SimpleSAML/Metadata/MetaDataStorageHandlerMDX.php
+++ b/lib/SimpleSAML/Metadata/MetaDataStorageHandlerMDX.php
@@ -102,7 +102,6 @@ class SimpleSAML_Metadata_MetaDataStorageHandlerMDX extends SimpleSAML_Metadata_
 		assert('is_string($entityId)');
 
 		$cachekey = sha1($entityId);
-		$globalConfig = SimpleSAML_Configuration::getInstance();
 		return $this->cacheDir . '/' . $set . '-' . $cachekey . '.cached.xml';
 	}