diff --git a/upload/system/library/db/mysqli.php b/upload/system/library/db/mysqli.php
index 9ce7c3c55..38c9ce0dc 100644
--- a/upload/system/library/db/mysqli.php
+++ b/upload/system/library/db/mysqli.php
@@ -1,7 +1,7 @@
 <?php
 namespace DB;
 class MySQLi {
-	private object|null $connection;
+	private ?object $connection;
 
 	/**
 	 * Constructor