diff --git a/materio_search_api.module b/materio_search_api.module
index c51b58f2..c83bf5c6 100755
--- a/materio_search_api.module
+++ b/materio_search_api.module
@@ -774,8 +774,8 @@ function materio_search_api_advanced_search_form($form, &$form_state){
 
         $classes2 = array("treelevel2", $child->tid);
 
-        $options2 = [];
-        $dflt_values2 = [];
+        $options2 = array();
+        $dflt_values2 = array();
         foreach ($children2 as $tid2 => $child2) {
           // $child2 = taxonomy_term_load($child2->tid);
           // if($child2->field_used_on_advanced_search['und'][0]['value'] == 0){