diff --git a/core/modules/locale/locale.bulk.inc b/core/modules/locale/locale.bulk.inc
index 0581af4..a6c415e 100644
--- a/core/modules/locale/locale.bulk.inc
+++ b/core/modules/locale/locale.bulk.inc
@@ -431,11 +431,11 @@ function locale_translate_batch_import($filepath, $options, &$context) {
   );
   // The filename is either {langcode}.po or {prefix}.{langcode}.po, so
   // we can extract the language code to use for the import from the end.
-  if ($options['langcode'] || preg_match('!(/|\.)([^\./]+)\.po$!', $filepath, $matches)) {
+  if (!empty($options['langcode']) || preg_match('!(/|\.)([^\./]+)\.po$!', $filepath, $matches)) {
     $file = entity_create('file', array('filename' => drupal_basename($filepath), 'uri' => $filepath));
     // We need only the last match, but only if the langcode is not explicitly
     // specified in the $options array.
-    if (!$options['langcode'] && is_array($matches)) {
+    if (empty($options['langcode']) && is_array($matches)) {
       $options['langcode'] = array_pop($matches);
     }
     try {