diff --git a/main/inc/local.inc.php b/main/inc/local.inc.php
index 1996da8894..7237f40f7b 100755
--- a/main/inc/local.inc.php
+++ b/main/inc/local.inc.php
@@ -1394,6 +1394,6 @@ if ((isset($cas_login) && $cas_login && exist_firstpage_parameter()) ||
 
 Redirect::session_request_uri($logging_in, $user_id);
 
-if (!ChamiloApi::isAjaxRequest() && api_get_configuration_value('survey_answered_at_field')) {
+if (!ChamiloApi::isAjaxRequest() && api_get_configuration_value('allow_mandatory_survey')) {
     SurveyManager::protectByMandatory();
 }