diff --git a/lib/adminlib.php b/lib/adminlib.php
index b5814f97735..d0237e8e973 100644
--- a/lib/adminlib.php
+++ b/lib/adminlib.php
@@ -5760,6 +5760,7 @@ function print_plugin_tables() {
         'news_items',
         'online_users',
         'participants',
+        'private_files',
         'quiz_results',
         'recent_activity',
         'rss_client',