diff --git a/lib/SimpleSAML/Configuration.php b/lib/SimpleSAML/Configuration.php
index b1745344423e21aa720c3bcf48ab536e35173396..487905ec9ce52e0c6b1d73d0ae97d040118d78e4 100644
--- a/lib/SimpleSAML/Configuration.php
+++ b/lib/SimpleSAML/Configuration.php
@@ -93,7 +93,7 @@ class SimpleSAML_Configuration {
 		$config = 'UNINITIALIZED';
 
 		/* The file initializes a variable named '$config'. */
-		require_once($filename);
+		require($filename);
 
 		/* Check that $config is initialized to an array. */
 		if (!is_array($config)) {