diff --git a/src/Symfony/Component/HttpFoundation/ServerBag.php b/src/Symfony/Component/HttpFoundation/ServerBag.php
index 9afb6012bd59..08983fe1e579 100644
--- a/src/Symfony/Component/HttpFoundation/ServerBag.php
+++ b/src/Symfony/Component/HttpFoundation/ServerBag.php
@@ -44,11 +44,13 @@ public function getHeaders()
         } else {
             /*
              * php-cgi under Apache does not pass HTTP Basic user/pass to PHP by default
-             * For this workaround to work, add this line to your .htaccess file:
+             * For this workaround to work, add these lines to your .htaccess file:
+             * RewriteCond %{HTTP:Authorization} ^(.+)$
              * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
              *
              * A sample .htaccess file:
              * RewriteEngine On
+             * RewriteCond %{HTTP:Authorization} ^(.+)$
              * RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
              * RewriteCond %{REQUEST_FILENAME} !-f
              * RewriteRule ^(.*)$ app.php [QSA,L]