Index: install.php
===================================================================
RCS file: /cvs/drupal/drupal/install.php,v
retrieving revision 1.151
diff -u -p -r1.151 install.php
--- install.php	22 Jan 2009 19:31:07 -0000	1.151
+++ install.php	3 Feb 2009 21:48:23 -0000
@@ -680,7 +680,7 @@ function install_tasks($profile, $task) 
     if (!empty($install_locale) && ($install_locale != 'en')) {
       include_once DRUPAL_ROOT . '/includes/locale.inc';
       // Enable installation language as default site language.
-      locale_add_language($install_locale, NULL, NULL, NULL, NULL, NULL, 1, TRUE);
+      locale_add_language($install_locale, NULL, NULL, NULL, '', NULL, 1, TRUE);
       // Collect files to import for this language.
       $batch = locale_batch_by_language($install_locale, '_install_locale_initial_batch_finished');
       if (!empty($batch)) {