diff --git a/picture.php b/picture.php
index d7adab8c4..df5d78c9d 100644
--- a/picture.php
+++ b/picture.php
@@ -30,7 +30,7 @@ if ( !isset($page['rank_of'][$page['image_id']]) )
 SELECT id, file, level
   FROM '.IMAGES_TABLE.'
   WHERE ';
-  if ($page['image_id']>0)
+  if (is_int($page['image_id']))
   {
     $query .= 'id = '.$page['image_id'];
   }
@@ -1044,4 +1044,4 @@ else
 //------------------------------------------------------------ log informations
 pwg_log($picture['current']['id'], 'picture');
 include(PHPWG_ROOT_PATH.'include/page_tail.php');
-?>
\ No newline at end of file
+?>