diff --git a/include/ws_functions.inc.php b/include/ws_functions.inc.php
index e1967bcbb..7d1c6431a 100644
--- a/include/ws_functions.inc.php
+++ b/include/ws_functions.inc.php
@@ -2427,6 +2427,7 @@ SELECT *
   $update = array();
 
   $info_columns = array(
+    'file',
     'name',
     'author',
     'comment',
diff --git a/ws.php b/ws.php
index c7781093b..4319bada9 100644
--- a/ws.php
+++ b/ws.php
@@ -376,6 +376,7 @@ function ws_addDefaultMethods( $arr )
     array(
       'image_id' => array(),
 
+      'file' => array('default' => null),
       'name' => array('default' => null),
       'author' => array('default' => null),
       'date_creation' => array('default' => null),