diff --git a/materio_search_api.module b/materio_search_api.module
index 7c6cd81a..b0d579d9 100755
--- a/materio_search_api.module
+++ b/materio_search_api.module
@@ -708,6 +708,8 @@ function materio_search_api_advanced_search_form($form, &$form_state){
   );
 
   foreach ($vocabularies as $vid) {
+    // dsm($vid, "vid");
+
     $voc = taxonomy_vocabulary_load($vid);
     // dsm($voc, 'voc');
 
@@ -717,14 +719,13 @@ function materio_search_api_advanced_search_form($form, &$form_state){
       '#tree' => true,
     );
 
-    $tree = taxonomy_get_tree($vid, 0, 1);
+    $tree = taxonomy_get_tree($vid, 0, 1, TRUE);
     // dsm($tree, 'tree');
 
     if(!count($tree))
       continue;
 
     foreach ($tree as $term) {
-      $term = taxonomy_term_load($term->tid);
       // dsm($term, "term");
 
       $children = taxonomy_get_children($term->tid, $vid);
diff --git a/materio_taxonomy.module b/materio_taxonomy.module
index 07a7a404..2e5a987d 100755
--- a/materio_taxonomy.module
+++ b/materio_taxonomy.module
@@ -1,4 +1,4 @@
-<?php	
+<?php
 
 /**
  * Implements hook_permission().
@@ -18,7 +18,7 @@ function materio_taxonomy_permission() {
     'title' => t('access taxonomy terms page'),
     'description' => t(''),
   );
-  
+
   return $perms;
 }
 
@@ -26,4 +26,52 @@ function materio_taxonomy_menu_alter(&$items) {
   $items['taxonomy/term/%taxonomy_term']['access arguments'] = array('access taxonomy terms page');
   $items['taxonomy/term/%taxonomy_term/view']['access arguments'] = array('access taxonomy terms page');
   $items['taxonomy/term/%taxonomy_term/feed']['access arguments'] = array('access taxonomy terms page');
+}
+
+
+
+/**
+ * Implementation of hook_query_term_access_alter().
+ *
+ * debug de i18n_select_query_term_access_alter()
+ * qui filtre les terms par language mm pour les vocabulaires en mode localized.
+ * utile pour la recherche avancée de materio_search_api materio_search_api_advanced_search_form()
+ *
+ */
+function materio_taxonomy_query_term_access_alter(QueryAlterableInterface $query) {
+  // dsm($query, 'materio taxo query');
+  $conditions =& $query->conditions();
+
+  # roll over condition first time to determine i18n_voc_mode
+  $i18n_voc_mode = 0;
+  foreach ($conditions as $condition) {
+    if (is_array($condition)) {
+      // dsm($condition, 'conditon '.$condition['field']);
+      if($condition['field'] == 't.vid'){
+        $vid = $condition['value'];
+        $i18n_voc_mode = i18n_taxonomy_vocabulary_mode($vid);
+        // dsm($i18n_voc_mode, 'i18n_voc_mode');
+      }
+    }
+  }
+
+  # roll over conditions a second time to re-alter/fixe language selection
+  # i18n vocabulary mode is 1 for localized terms
+  if($i18n_voc_mode == 1){
+    foreach ($conditions as $index => $condition) {
+      if (is_array($condition)) {
+        // dsm($condition, 'conditon '.$condition['field']);
+        if($condition['field'] == 't.language' && $i18n_voc_mode == 1){
+          $l = array('und');
+          $ll = i18n_language_list();
+          // dsm($ll, 'list language');
+          foreach ($ll as $langcode => $langname) {
+            $l[] = $langcode;
+          }
+          $conditions[$index]['value'] = $l;
+        }
+      }
+    }
+  }
+
 }
\ No newline at end of file