diff --git a/web/app/.default-config.php b/web/app/.default-config.php
index 974d264..599b1e3 100644
--- a/web/app/.default-config.php
+++ b/web/app/.default-config.php
@@ -12,7 +12,8 @@ return [
 		'database' => 'app_uoj233',
 		'username' => 'root',
 		'password' => '_database_password_',
-		'host' => '127.0.0.1'
+		'host' => '127.0.0.1',
+		'port' => '3306',
 	],
 	'web' => [
 		'domain' => null,
diff --git a/web/app/models/DB.php b/web/app/models/DB.php
index a1b9c56..f696a6f 100644
--- a/web/app/models/DB.php
+++ b/web/app/models/DB.php
@@ -3,7 +3,7 @@
 class DB {
 	public static function init() {
 		global $uojMySQL;
-		@$uojMySQL = mysqli_connect(UOJConfig::$data['database']['host'] . ':3306', UOJConfig::$data['database']['username'], UOJConfig::$data['database']['password'], UOJConfig::$data['database']['database']);
+		@$uojMySQL = mysqli_connect(UOJConfig::$data['database']['host'] . ':' . UOJConfig::$data['database']['port'], UOJConfig::$data['database']['username'], UOJConfig::$data['database']['password'], UOJConfig::$data['database']['database']);
 		if (!$uojMySQL) {
 			echo 'There is something wrong with database >_<.... ' . mysqli_connect_error();
 			die();
@@ -75,4 +75,4 @@ class DB {
 		global $uojMySQL;
 		return mysqli_affected_rows($uojMySQL);
 	}
-}
\ No newline at end of file
+}