diff --git a/admin/batch_manager.php b/admin/batch_manager.php
index 47ac1bf9c..4dc476e2d 100644
--- a/admin/batch_manager.php
+++ b/admin/batch_manager.php
@@ -605,7 +605,7 @@ foreach ($filter_sets as $set)
 {
   $current_set = array_intersect($current_set, $set);
 }
-$page['cat_elements_id'] = empty($current_set) ? [] : $current_set;
+$page['cat_elements_id'] = empty($current_set) ? array() : $current_set;
 
 
 // +-----------------------------------------------------------------------+
diff --git a/admin/stats.php b/admin/stats.php
index bf64ac035..aabc00884 100644
--- a/admin/stats.php
+++ b/admin/stats.php
@@ -212,7 +212,7 @@ ORDER BY
   month DESC
 ;';
 
-  $result['avg'] = query2array($query)[0]['AVG(nb_pages)'];
+  list($result['avg']) = pwg_db_fetch_row(pwg_query($query));
   
   return $result;
 }