diff --git a/wp-config.php b/wp-config.php
index aef2682..eb3da56 100644
--- a/wp-config.php
+++ b/wp-config.php
@@ -71,6 +71,9 @@
 	$hostname = "localhost";
 }
 
+// Filter
+$hostname = filter_var($hostname, FILTER_SANITIZE_STRING);
+
 // Try server hostname
 if (!defined('WP_ENV')) {
     // Set environment based on hostname