diff --git a/modules/upload/views_handler_field_upload_fid.inc b/modules/upload/views_handler_field_upload_fid.inc
index 32356c7..d7ae1d8 100755
--- a/modules/upload/views_handler_field_upload_fid.inc	
+++ b/modules/upload/views_handler_field_upload_fid.inc
@@ -29,7 +29,7 @@ class views_handler_field_upload_fid extends views_handler_field_prerender_list
     );
   }
 
-  function pre_render($values) {
+  function pre_render(&$values) {
     $vids = array();
     $this->items = array();
 
diff --git a/modules/upload/views_handler_field_upload_description.inc b/modules/upload/views_handler_field_upload_description.inc
index 964925c..ec6ad0c 100755
--- a/modules/upload/views_handler_field_upload_description.inc	
+++ b/modules/upload/views_handler_field_upload_description.inc
@@ -26,7 +26,7 @@ class views_handler_field_upload_description extends views_handler_field {
     );
   }
 
-  function pre_render($values) {
+  function pre_render(&$values) {
     if (empty($this->options['link_to_file'])) {
       return;
     }
diff --git a/modules/user/views_handler_field_user_roles.inc b/modules/user/views_handler_field_user_roles.inc
index c664630..e677f11 100755
--- a/modules/user/views_handler_field_user_roles.inc	
+++ b/modules/user/views_handler_field_user_roles.inc
@@ -13,7 +13,7 @@ class views_handler_field_user_roles extends views_handler_field_prerender_list
     $this->field_alias = $this->aliases['uid'];
   }
 
-  function pre_render($values) {
+  function pre_render(&$values) {
     $uids = array();
     $this->items = array();