diff --git a/htdocs/comm/action/card.php b/htdocs/comm/action/card.php
index 97d8b077dbc..a8bbf1c8a2d 100644
--- a/htdocs/comm/action/card.php
+++ b/htdocs/comm/action/card.php
@@ -1192,7 +1192,7 @@ if ($action == 'create') {
 	print '<input type="hidden" name="donotclearsession" value="1">';
 	print '<input type="hidden" name="page_y" value="">';
 	if ($backtopage) {
-		print '<input type="hidden" name="backtopage" value="'.($backtopage != '1' ? $backtopage : dol_htmlentities($_SERVER["HTTP_REFERER"])).'">';
+		print '<input type="hidden" name="backtopage" value="'.($backtopage != '1' ? $backtopage : '').'">';
 	}
 	if (empty($conf->global->AGENDA_USE_EVENT_TYPE)) {
 		print '<input type="hidden" name="actioncode" value="'.dol_getIdFromCode($db, 'AC_OTH', 'c_actioncomm').'">';
@@ -1722,7 +1722,7 @@ if ($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' ? $backtopage : dol_htmlentities($_SERVER["HTTP_REFERER"])).'">';
+			print '<input type="hidden" name="backtopage" value="'.($backtopage != '1' ? $backtopage : '').'">';
 		}
 		if (empty($conf->global->AGENDA_USE_EVENT_TYPE) && ! preg_match('/^TICKET_MSG_PRIVATE/', $object->code)) {
 			print '<input type="hidden" name="actioncode" value="'.$object->type_code.'">';