diff --git a/admin/settings/courses.php b/admin/settings/courses.php
index 59891586487..ad5ede65db3 100644
--- a/admin/settings/courses.php
+++ b/admin/settings/courses.php
@@ -276,6 +276,8 @@ if ($hassiteconfig or has_any_capability($capabilities, $systemcontext)) {
     $maxkeptoptions = array(
         0 => new lang_string('all'), 1 => '1',
         2 => '2',
+        3 => '3',
+        4 => '4',
         5 => '5',
         10 => '10',
         20 => '20',