diff --git a/index.php b/index.php
index 68c904982..7cd78dc0f 100644
--- a/index.php
+++ b/index.php
@@ -17,7 +17,7 @@ if (!is_file($autoload)) {
 
 if (PHP_SAPI == 'cli-server') {
     if (!isset($_SERVER['PHP_CLI_ROUTER'])) {
-        die("PHP webserver requires a router to run Grav, please use: <pre>php -S {$_SERVER["SERVER_NAME"]}:{$_SERVER["SERVER_PORT"]} system/router.php</pre>");
+       die("PHP webserver requires a router to run Grav, please use: <pre>php -S {$_SERVER[\"SERVER_NAME\"]}:{$_SERVER[\"SERVER_PORT\"]} system/router.php</pre>");
     }
 }