diff --git a/core/modules/locale/locale.bulk.inc b/core/modules/locale/locale.bulk.inc
index 02eb3f1..91e8fd1 100644
--- a/core/modules/locale/locale.bulk.inc
+++ b/core/modules/locale/locale.bulk.inc
@@ -453,7 +453,7 @@ function locale_translate_batch_import($filepath, $options, &$context) {
     $file = entity_create('file', array('filename' => $basename, 'uri' => 'translations://'. $basename));
     // We need only the last match, but only if the langcode is not explicitly
     // specified in the $options array.
-    if (!$options['langcode'] && is_array($matches)) {
+    if ((!isset($options['langcode']) || !$options['langcode']) && is_array($matches)) {
       $options['langcode'] = array_pop($matches);
     }
     try {