diff --git a/interface/web/monitor/show_log.php b/interface/web/monitor/show_log.php
index c033c9c2b127efc48ab717f641c7658bbbc6b527..10abacd1fbcd6c4308ae76b7dc21ef13e75c0f47 100644
--- a/interface/web/monitor/show_log.php
+++ b/interface/web/monitor/show_log.php
@@ -124,7 +124,7 @@ $record = $app->db->queryOneRecord("SELECT data, state FROM monitor_data WHERE t
 if(isset($record['data'])) {
 	$data = unserialize($record['data']);
 
-	$logData = nl2br($data);
+	$logData = nl2br(htmlspecialchars($data));
 
 	$app->tpl->setVar("log_data", $logData);
 } else {