diff --git a/mod/bigbluebuttonbn/classes/local/proxy/bigbluebutton_proxy.php b/mod/bigbluebuttonbn/classes/local/proxy/bigbluebutton_proxy.php
index <HASH>..<HASH> 100644
--- a/mod/bigbluebuttonbn/classes/local/proxy/bigbluebutton_proxy.php
+++ b/mod/bigbluebuttonbn/classes/local/proxy/bigbluebutton_proxy.php
@@ -80,7 +80,10 @@ class bigbluebutton_proxy extends proxy_base {
         if (!is_null($createtime)) {
             $data['createTime'] = $createtime;
         }
-
+        $currentlang = current_language();
+        if (!empty(trim($currentlang))) {
+            $data['userdata-bbb_override_default_locale'] = $currentlang;
+        }
         return self::action_url('join', $data);
     }
MDL-<I> mod_bigbluebuttonbn: align language with user's preference

* Pick BBB UI language from Moodle user profile language instead of
preferred browser language