diff --git a/public_html/includes/class/class.LSattr_html_select_list.php b/public_html/includes/class/class.LSattr_html_select_list.php
index b3ad5a05..16ea9be1 100644
--- a/public_html/includes/class/class.LSattr_html_select_list.php
+++ b/public_html/includes/class/class.LSattr_html_select_list.php
@@ -163,7 +163,7 @@ class LSattr_html_select_list extends LSattr_html{
*
* @retval array Merged array
**/
- protected function _array_merge() {
+ protected static function _array_merge() {
$ret=array();
foreach(func_get_args() as $a) {
foreach($a as $k => $v) {