diff --git a/htdocs/core/class/CMailFile.class.php b/htdocs/core/class/CMailFile.class.php
index 5683c8e6a07..33db393bbc6 100644
--- a/htdocs/core/class/CMailFile.class.php
+++ b/htdocs/core/class/CMailFile.class.php
@@ -1628,7 +1628,7 @@ class CMailFile
 	 * @return  array                       array of email => name
 	 * @see getValidAddress()
 	 */
-	public function getArrayAddress($address)
+	public static function getArrayAddress($address)
 	{
 		global $conf;