diff --git a/tests/test_framework/phpbb_database_test_connection_manager.php b/tests/test_framework/phpbb_database_test_connection_manager.php
index a7559e2183..68e09add94 100644
--- a/tests/test_framework/phpbb_database_test_connection_manager.php
+++ b/tests/test_framework/phpbb_database_test_connection_manager.php
@@ -69,6 +69,11 @@ class phpbb_database_test_connection_manager
 			default:
 				$dsn .= 'host=' . $this->config['dbhost'];
 
+				if ($this->config['dbport'])
+				{
+					$dsn .= ';port=' . $this->config['dbport'];
+				}
+
 				if ($use_db)
 				{
 					$dsn .= ';dbname=' . $this->config['dbname'];