diff --git a/redirect.module b/redirect.module
index 0f294f6..1d9554b 100644
--- a/redirect.module
+++ b/redirect.module
@@ -403,6 +403,7 @@ function redirect_init() {
 
   // Force langauge prefix.
   if (variable_get('redirect_global_language_prefix', 0) && module_exists('locale')) {
+    require_once DRUPAL_ROOT . '/includes/language.inc';
     list($language, $raw_path) = language_url_split_prefix($request_uri, language_list());
     if (!$language) {
       redirect_redirect((object)array('redirect' => $request_uri, 'type' => 'global'));
@@ -1101,6 +1102,7 @@ function redirect_goto($redirect) {
   }
   if (module_exists('locale')) {
     // Peel off language prefix if already there.
+    require_once DRUPAL_ROOT . '/includes/language.inc';
     list($language, $raw_path) = language_url_split_prefix($redirect->redirect, language_list());
     $url = ($language) ? url($raw_path, $redirect->redirect_options) : url($redirect->redirect, $redirect->redirect_options);
   }