diff --git a/public/main/auth/inscription.php b/public/main/auth/inscription.php
index b97a55ff63..97fff339a1 100644
--- a/public/main/auth/inscription.php
+++ b/public/main/auth/inscription.php
@@ -1089,6 +1089,7 @@ if ($form->validate()) {
             $cond_array = explode(':', $values['legal_accept_type']);
             if (!empty($cond_array[0]) && !empty($cond_array[1])) {
                 $time = time();
+                // legal_accept is stored as version_id:language_id:timestamp
                 $conditionToSave = (int) $cond_array[0].':'.(int) $cond_array[1].':'.$time;
                 UserManager::update_extra_field_value(
                     $userId,
diff --git a/public/main/inc/ajax/exercise.ajax.php b/public/main/inc/ajax/exercise.ajax.php
index 39781fa0b6..036caf8fe6 100644
--- a/public/main/inc/ajax/exercise.ajax.php
+++ b/public/main/inc/ajax/exercise.ajax.php
@@ -8,7 +8,7 @@ use ChamiloSession as Session;
 
 require_once __DIR__.'/../global.inc.php';
 $current_course_tool = TOOL_QUIZ;
-$debug = true;
+$debug = false;
 api_protect_course_script(true);
 $action = $_REQUEST['a'];
 $course_id = api_get_course_int_id();