diff --git a/src/Symfony/Components/HttpKernel/Request.php b/src/Symfony/Components/HttpKernel/Request.php
index ac93f963d4..a38ad26c0a 100644
--- a/src/Symfony/Components/HttpKernel/Request.php
+++ b/src/Symfony/Components/HttpKernel/Request.php
@@ -351,7 +351,7 @@ class Request
     public function getHost()
     {
         if ($host = $this->headers->get('X_FORWARDED_HOST')) {
-            $elements = implode(',', $host);
+            $elements = explode(',', $host);
 
             return trim($elements[count($elements) - 1]);
         } else {