diff --git a/api/api_login.php b/api/api_login.php
index bfab6d5..c17eb5b 100644
--- a/api/api_login.php
+++ b/api/api_login.php
@@ -57,10 +57,10 @@ class api_login {
      * @param string $username Username
      * @param sha1 $password_sha1 User Password SHA1 String
      * @param email $email Email of the new User
-     * @param lang $locale Locale which the User wants to register
+     * @param lang $locale Locale which the User wants to register or null for default language
      * @return JSON Returns JSON result with success/failure status
      */
-    public static function call_account_action_create($username, $password_sha1, $email, $locale){
+    public static function call_account_action_create($username, $password_sha1, $email, $locale = null){
         return \SYSTEM\SECURITY\security::create($username, $password_sha1, $email, $locale,true);}
     
     /**
diff --git a/lib/system/lib/system.js b/lib/system/lib/system.js
index bbaffe0..9a6667d 100644
--- a/lib/system/lib/system.js
+++ b/lib/system/lib/system.js
@@ -364,8 +364,7 @@ SYSTEM.prototype.account_create = function(username,password,email,success){
                 action: 'create',
                 username: username,
                 password_sha1: $.sha1(password),
-                email: email,
-                locale: 'enUS'
+                email: email
             },
             success: success,
             error: function(XMLHttpRequest, textStatus, errorThrown){
diff --git a/security/security.php b/security/security.php
index 29cb20c..03bc7e1 100644
--- a/security/security.php
+++ b/security/security.php
@@ -25,10 +25,11 @@ class security {
      * @param bool $json_result Return data as JSON or Array
      * @return mixed Returns json with status true or Error or Array with userinfo.
      */
-    public static function create($username, $password_sha1, $email, $locale = 'enUS',$json_result = false){
+    public static function create($username, $password_sha1, $email, $locale = null,$json_result = false){
         self::startSession();
         if(!self::available($username)){
-            throw new \SYSTEM\LOG\ERROR("Username unavailable");}                        
+            throw new \SYSTEM\LOG\ERROR("Username unavailable");}
+        $locale = $locale ? $locale : \SYSTEM\CONFIG\config::get(\SYSTEM\CONFIG\config_ids::SYS_CONFIG_DEFAULT_LANG);
         $result = \SYSTEM\SQL\SYS_SECURITY_CREATE::QI(array( $username , $password_sha1, $email, $locale));
         $row = true;
         if(!$result || !($row = self::login($username, $password_sha1, $locale))){            
diff --git a/sql/qt/mysql/data/system_api.sql b/sql/qt/mysql/data/system_api.sql
index 11ee02e..25ffd00 100644
--- a/sql/qt/mysql/data/system_api.sql
+++ b/sql/qt/mysql/data/system_api.sql
@@ -22,7 +22,7 @@ REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `na
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (24, 0, 2, 11, 'create', 'username', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (25, 0, 2, 11, 'create', 'password_sha1', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (26, 0, 2, 11, 'create', 'email', 'EMAIL');
-REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (27, 0, 2, 11, 'create', 'locale', 'LANG');
+REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (27, 0, 3, 11, 'create', 'locale', 'LANG');
 
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (30, 0, 2, 10, 'files', 'cat', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (31, 0, 3, 10, 'files', 'id', 'STRING');
diff --git a/sql/qt/mysql/data/system_sai_api.sql b/sql/qt/mysql/data/system_sai_api.sql
index 05b52c6..03121dd 100644
--- a/sql/qt/mysql/data/system_sai_api.sql
+++ b/sql/qt/mysql/data/system_sai_api.sql
@@ -27,7 +27,7 @@ REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `na
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (24, 42, 2, 11, 'create', 'username', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (25, 42, 2, 11, 'create', 'password_sha1', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (26, 42, 2, 11, 'create', 'email', 'STRING');
-REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (27, 42, 2, 11, 'create', 'locale', 'LANG');
+REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (27, 42, 3, 11, 'create', 'locale', 'LANG');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (30, 42, 2, 10, 'files', 'cat', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (31, 42, 3, 10, 'files', 'id', 'STRING');
 REPLACE INTO `system_api` (`ID`, `group`, `type`, `parentID`, `parentValue`, `name`, `verify`) VALUES (40, 42, 2, 10, 'text', 'request', 'STRING');