diff --git a/htdocs/comm/action/card.php b/htdocs/comm/action/card.php
index 42257707ea2..74c7a6d272f 100644
--- a/htdocs/comm/action/card.php
+++ b/htdocs/comm/action/card.php
@@ -1474,7 +1474,7 @@ if ($id > 0) {
 		print '<input type="hidden" name="ref_ext" value="'.$object->ref_ext.'">';
 		print '<input type="hidden" name="page_y" value="">';
 		if ($backtopage) {
-			print '<input type="hidden" name="backtopage" value="'.($backtopage != '1' ? $backtopage : htmlentities($_SERVER["HTTP_REFERER"])).'">';
+			print '<input type="hidden" name="backtopage" value="'.($backtopage != '1' ? $backtopage : dol_htmlentities($_SERVER["HTTP_REFERER"])).'">';
 		}
 		if (empty($conf->global->AGENDA_USE_EVENT_TYPE)) {
 			print '<input type="hidden" name="actioncode" value="'.$object->type_code.'">';