diff --git a/metatag.module b/metatag.module
index c2c068a..9500fec 100644
--- a/metatag.module
+++ b/metatag.module
@@ -889,9 +889,14 @@ function metatag_generate_entity_metatags($entity, $entity_type, $langcode = NUL
   // Determine the language this entity actually uses.
   $entity_language = metatag_entity_get_language($entity_type, $entity);
 
+  // Take special care of requests with an empty langauge code.
+  if (empty($langcode)) {
+    // Assume the entity's language in this case.
+    $langcode = $entity_language;
+  }
   // The requested language is different to the entity's language, look for
   // a language elsewhere.
-  if ($entity_language != $langcode) {
+  elseif (!empty($langcode) && $entity_language != $langcode) {
     // No language was defined for the entity.
     if ($entity_language == LANGUAGE_NONE) {
       $langcode = LANGUAGE_NONE;