diff --git a/pandora_console/include/functions_events.php b/pandora_console/include/functions_events.php
index 9616634adb..b4f5a7bcbe 100644
--- a/pandora_console/include/functions_events.php
+++ b/pandora_console/include/functions_events.php
@@ -5272,7 +5272,7 @@ function events_page_comments($event, $ajax=false, $groupedComments=[])
                             '<b>%s %s %s%s</b>',
                             $c['action'],
                             __('by'),
-                            get_user_fullname($c['id_user']).' ('.$c['id_user'].')',
+                            get_user_fullname(io_safe_input($c['id_user'])).' ('.io_safe_input($c['id_user']).')',
                             $eventIdExplanation
                         );