diff --git a/system/src/Grav/Common/Grav.php b/system/src/Grav/Common/Grav.php
index f72d799ae..38ff62fa1 100644
--- a/system/src/Grav/Common/Grav.php
+++ b/system/src/Grav/Common/Grav.php
@@ -255,7 +255,13 @@ class Grav extends Container
             $this['session']->close();
         }
 
-        header("Location: " . rtrim($uri->rootUrl(), '/') .'/'. trim($route, '/'), true, $code);
+        if ($this['uri']->isExternal($route)) {
+            $url = $route;
+        } else {
+            $url = rtrim($uri->rootUrl(), '/') .'/'. trim($route, '/');
+        }
+
+        header("Location: {$url}", true, $code);
         exit();
     }
 
diff --git a/system/src/Grav/Common/Uri.php b/system/src/Grav/Common/Uri.php
index 839b91c11..d1dad9fda 100644
--- a/system/src/Grav/Common/Uri.php
+++ b/system/src/Grav/Common/Uri.php
@@ -378,6 +378,20 @@ class Uri
         return $ipaddress;
 
     }
+    /**
+     * Is this an external URL? if it starts with `http` then yes, else false
+     *
+     * @param  string  $url the URL in question
+     * @return boolean      is eternal state
+     */
+    public function isExternal($url)
+    {
+        if (Utils::startsWith($url, 'http')) {
+            return true;
+        } else {
+            return false;
+        }
+    }
 
     /**
      * The opposite of built-in PHP method parse_url()