diff --git a/src/PortAbstract.php b/src/PortAbstract.php
index df3ec500..fb9d0b79 100644
--- a/src/PortAbstract.php
+++ b/src/PortAbstract.php
@@ -324,6 +324,7 @@ protected function url_modify($changes, $url)
 
 		return (!empty($url_array['scheme']) ? $url_array['scheme'] . '://' : null) .
 		(!empty($url_array['host']) ? $url_array['host'] : null) .
+		(!empty($url_array['port']) ? ':' . $url_array['port'] : null) .
 		$url_array['path'] . '?' . http_build_query($query_array);
 	}
 }