diff --git a/metatag.module b/metatag.module
index 9b864c8..02e5bf7 100644
--- a/metatag.module
+++ b/metatag.module
@@ -507,7 +507,7 @@ function metatag_metatags_save($entity_type, $entity_id, $revision_id, $metatags
   foreach ($metatags as $key => $val) {
     // Meta tag names will not match LANGUAGE_NONE nor will they exist in the
     // list of enabled languages, whereas country codes will.
-    if ($key == LANGUAGE_NONE || isset($languages[$key])) {
+    if ($key == LANGUAGE_NONE || in_array($key, $languages)) {
       $lang_nested = TRUE;
     }
   }