diff --git a/h5p-metadata.class.php b/h5p-metadata.class.php
index 73223b1..830e9dc 100644
--- a/h5p-metadata.class.php
+++ b/h5p-metadata.class.php
@@ -40,6 +40,10 @@ abstract class H5PMetadata {
     ),
     'yearTo' => array(
       'type' => 'int'
+    ),
+    'defaultLanguage' => array(
+      'type' => 'text',
+      'maxLength' => 32,
     )
   );
 
@@ -61,6 +65,7 @@ abstract class H5PMetadata {
       ',"yearFrom":' . (isset($content->year_from) ? $content->year_from : 'null') .
       ',"yearTo":' .  (isset($content->year_to) ? $content->year_to : 'null') .
       ',"changes":' . (isset($content->changes) ? $content->changes : 'null') .
+      ',"defaultLanguage":' . (isset($content->default_language) ? $content->default_language : 'null') .
       ',"authorComments":' . (isset($content->author_comments) ? json_encode($content->author_comments) : 'null') . '}';
   }
 
diff --git a/h5p.classes.php b/h5p.classes.php
index d3e7ee1..1868daf 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -1671,7 +1671,7 @@ Class H5PExport {
       'embedTypes' => $embedTypes
     );
 
-    foreach(array('authors', 'source', 'license', 'licenseVersion', 'licenseExtras' ,'yearFrom', 'yearTo', 'changes', 'authorComments') as $field) {
+    foreach(array('authors', 'source', 'license', 'licenseVersion', 'licenseExtras' ,'yearFrom', 'yearTo', 'changes', 'authorComments', 'defaultLanguage') as $field) {
       if (isset($content['metadata'][$field]) && $content['metadata'][$field] !== '') {
         if (($field !== 'authors' && $field !== 'changes') || (count($content['metadata'][$field]) > 0)) {
           $h5pJson[$field] = json_decode(json_encode($content['metadata'][$field], TRUE));
@@ -4568,6 +4568,11 @@ class H5PContentValidator {
         'type' => 'text',
         'widget' => 'none'
       ),
+      (object) array(
+        'name' => 'defaultLanguage',
+        'type' => 'text',
+        'widget' => 'none'
+      )
     );
 
     return $semantics;