diff --git a/system/src/Grav/Common/Uri.php b/system/src/Grav/Common/Uri.php
index 588ee6333..82028ba0a 100644
--- a/system/src/Grav/Common/Uri.php
+++ b/system/src/Grav/Common/Uri.php
@@ -185,7 +185,8 @@ class Uri
         $params = parse_url($url);
 
         $this->name = $params['host'];
-        $this->port = $params['port'];
+        $this->port = isset($params['port']) ? $params['port'] : '';
+
         $this->uri = $params['path'];
         if (isset($params['query'])) {
             $this->uri .= '?' . $params['query'];