diff --git a/src/UriParser.php b/src/UriParser.php
index 55658e3..f019b61 100644
--- a/src/UriParser.php
+++ b/src/UriParser.php
@@ -80,7 +80,7 @@ private function setQueryUri($uri)
     {
         $explode = explode('?', $uri);
 
-        $this->queryUri = (isset($explode[1])) ? rawurldecode($explode[1]) : null;
+        $this->queryUri = (isset($explode[1])) ? rawurldecode($explode[1]) : '';
     }
 
     private function setQueryParameters($queryUri)