diff --git a/src/Illuminate/Routing/UrlGenerator.php b/src/Illuminate/Routing/UrlGenerator.php
index 933ea69a672e..c09c01018652 100755
--- a/src/Illuminate/Routing/UrlGenerator.php
+++ b/src/Illuminate/Routing/UrlGenerator.php
@@ -171,8 +171,8 @@ public function to($path, $extra = [], $secure = null)
         $root = $this->getRootUrl($scheme);
 
         if (($queryPosition = strpos($path, '?')) !== false) {
-            $query = mb_substr($path, $queryPosition);
-            $path = mb_substr($path, 0, $queryPosition);
+            $query = substr($path, $queryPosition);
+            $path = substr($path, 0, $queryPosition);
         } else {
             $query = '';
         }