diff --git a/lib/system/system_control/systemcontrol.php b/lib/system/system_control/systemcontrol.php
index 2f01506..bdbcdc8 100755
--- a/lib/system/system_control/systemcontrol.php
+++ b/lib/system/system_control/systemcontrol.php
@@ -833,7 +833,7 @@ var $currentCoordinationObject=null;
 * @param chaine
 * @return entier
 */
-	function includeFiles($way, $requireString)
+	public static function includeFiles($way, $requireString)
 	{
 		$tab=array();
 		if (is_dir($way)) {