diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index f9e0bcf..71db833 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -1462,6 +1462,11 @@ function bootstrap_hooks() {
  */
 function t($string, array $args = array(), array $options = array()) {
   static $custom_strings;
+  $locale_exists = &drupal_static(__FUNCTION__);
+
+  if (!isset($locale_exits)) {
+    $locale_exists = module_exists('locale');
+  }
 
   // Merge in default.
   if (empty($options['langcode'])) {
@@ -1483,7 +1488,7 @@ function t($string, array $args = array(), array $options = array()) {
     $string = $custom_strings[$options['langcode']][$options['context']][$string];
   }
   // Translate with locale module if enabled.
-  elseif ($options['langcode'] != LANGUAGE_SYSTEM && ($options['langcode'] != 'en' || variable_get('locale_translate_english', FALSE)) && function_exists('locale')) {
+  elseif ($options['langcode'] != LANGUAGE_SYSTEM && ($options['langcode'] != 'en' || variable_get('locale_translate_english', FALSE)) && $locale_exists) {
     $string = locale($string, $options['context'], $options['langcode']);
   }
   if (empty($args)) {
@@ -2649,8 +2654,9 @@ function language($type, $reset = FALSE) {
 
   // Reset the language manager's cache and our own.
   if ($reset) {
-    if (drupal_container()->has('language_manager')) {
-      drupal_container()->get('language_manager')->reset($type);
+    $container = drupal_container();
+    if ($container->has('language_manager') && $container->isScopeActive('request')) {
+      $container->get('language_manager')->reset($type);
     }
     if (!isset($type)) {
       $languages = array();