diff --git a/sources/application/WebPage/AjaxPage.php b/sources/application/WebPage/AjaxPage.php
index a9001a921..185fd18d3 100644
--- a/sources/application/WebPage/AjaxPage.php
+++ b/sources/application/WebPage/AjaxPage.php
@@ -5,6 +5,7 @@
  */
 
 use Combodo\iTop\Application\TwigBase\Twig\TwigHelper;
+use Combodo\iTop\Application\UI\Base\Component\Panel\PanelUIBlockFactory;
 use Combodo\iTop\Application\UI\Base\iUIBlock;
 use Combodo\iTop\Application\UI\Base\Layout\iUIContentBlock;
 use Combodo\iTop\Renderer\BlockRenderer;