diff --git a/vendor/PicoFeed/Filter.php b/vendor/PicoFeed/Filter.php
index d6da5ac..4a6daa5 100644
--- a/vendor/PicoFeed/Filter.php
+++ b/vendor/PicoFeed/Filter.php
@@ -334,6 +334,8 @@ class Filter
             }
         }
 
+        if (! strlen($path)) return $url;
+
         if ($path{0} === '/') {
 
             // Absolute path