diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index 39452e0..8efa7b2 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -2699,7 +2699,7 @@ function request_path() {
     return $path;
   }
 
-  if (isset($_GET['q'])) {
+  if (isset($_GET['q']) && is_string($_GET['q'])) {
     // This is a request with a ?q=foo/bar query string. $_GET['q'] is
     // overwritten in drupal_path_initialize(), but request_path() is called
     // very early in the bootstrap process, so the original value is saved in