diff --git a/admin/configuration.php b/admin/configuration.php
index f0267ea44..63bc29f3c 100644
--- a/admin/configuration.php
+++ b/admin/configuration.php
@@ -440,6 +440,8 @@ switch ($page['section'])
// when submitting the form and an error remains
if (!isset($page['sizes_loaded_in_tpl']))
{
+ $is_gd = (pwg_image::get_library()=='gd')? true : false;
+ $template->assign('is_gd', $is_gd);
$template->assign(
'sizes',
array(
diff --git a/admin/themes/default/template/configuration.tpl b/admin/themes/default/template/configuration.tpl
index 6e51d53cf..ba1835d23 100644
--- a/admin/themes/default/template/configuration.tpl
+++ b/admin/themes/default/template/configuration.tpl
@@ -345,7 +345,17 @@ jQuery(document).ready(function(){