diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f55c20f..cbcf2a77 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 **Merged pull requests:**
 
 - Release v2.1.5-2023.09 🎉
+- Added missing translation in admin_ug_auth [\#254](https://github.com/torrentpier/torrentpier-lts/pull/254) ([belomaxorka](https://github.com/belomaxorka))
 - Support for IDN domains [\#252](https://github.com/torrentpier/torrentpier-lts/pull/252) ([belomaxorka](https://github.com/belomaxorka))
 - Fixed cache directory auto-creating with SQLite [\#247](https://github.com/torrentpier/torrentpier-lts/pull/247) ([belomaxorka](https://github.com/belomaxorka))
 - Minor improvements [\#245](https://github.com/torrentpier/torrentpier-lts/pull/245), [\#246](https://github.com/torrentpier/torrentpier-lts/pull/246), [\#248](https://github.com/torrentpier/torrentpier-lts/pull/248), [\#249](https://github.com/torrentpier/torrentpier-lts/pull/249), [\#250](https://github.com/torrentpier/torrentpier-lts/pull/250), [\#251](https://github.com/torrentpier/torrentpier-lts/pull/251), [\#253](https://github.com/torrentpier/torrentpier-lts/pull/253) ([belomaxorka](https://github.com/belomaxorka))
diff --git a/admin/admin_ug_auth.php b/admin/admin_ug_auth.php
index 1fd56892..15337d11 100644
--- a/admin/admin_ug_auth.php
+++ b/admin/admin_ug_auth.php
@@ -75,7 +75,7 @@ if ($submit && $mode == 'user')
 	{
 		if ($userdata['user_id'] == $user_id || $user_id == GUEST_UID || $user_id == BOT_UID)
 		{
-			bb_die("Could not update admin status");
+			bb_die($lang['AUTH_GENERAL_ERROR']);
 		}
 
 		DB()->query("UPDATE ". BB_USERS ." SET user_level = ". ADMIN ." WHERE user_id = $user_id LIMIT 1");
@@ -95,7 +95,7 @@ if ($submit && $mode == 'user')
 		// ignore if you're trying to change yourself from an admin to user!
 		if ($userdata['user_id'] == $user_id)
 		{
-			bb_die("Could not update admin status<br /><br />Could not change yourself from an admin to user");
+			bb_die($lang['AUTH_SELF_ERROR']);
 		}
 		// Update users level, reset to USER
 		DB()->query("UPDATE ". BB_USERS ." SET user_level = ". USER ." WHERE user_id = $user_id LIMIT 1");
@@ -471,4 +471,4 @@ $template->assign_vars(array(
 	'U_ALL_FORUMS'  => !empty($base_url) ? "$base_url&amp;c=all" : '',
 ));
 
-print_page('admin_ug_auth.tpl', 'admin');
\ No newline at end of file
+print_page('admin_ug_auth.tpl', 'admin');
diff --git a/library/language/en/main.php b/library/language/en/main.php
index 98660571..ded85ce3 100644
--- a/library/language/en/main.php
+++ b/library/language/en/main.php
@@ -1711,6 +1711,8 @@ $lang['USER_AUTH_UPDATED'] = 'User permissions have been updated';
 $lang['GROUP_AUTH_UPDATED'] = 'Group permissions have been updated';
 
 $lang['AUTH_UPDATED'] = 'Permissions have been updated';
+$lang['AUTH_GENERAL_ERROR'] = 'Could not update admin status';
+$lang['AUTH_SELF_ERROR'] = 'Could not change yourself from an admin to user';
 $lang['CLICK_RETURN_USERAUTH'] = 'Click %sHere%s to return to User Permissions';
 $lang['CLICK_RETURN_GROUPAUTH'] = 'Click %sHere%s to return to Group Permissions';
 $lang['CLICK_RETURN_FORUMAUTH'] = 'Click %sHere%s to return to Forum Permissions';
diff --git a/library/language/ru/main.php b/library/language/ru/main.php
index fd6f9015..73b92cca 100644
--- a/library/language/ru/main.php
+++ b/library/language/ru/main.php
@@ -1711,6 +1711,8 @@ $lang['USER_AUTH_UPDATED'] = 'Права пользователя изменен
 $lang['GROUP_AUTH_UPDATED'] = 'Права группы изменены';
 
 $lang['AUTH_UPDATED'] = 'Права доступа изменены';
+$lang['AUTH_GENERAL_ERROR'] = 'Не удалось обновить статус администратора';
+$lang['AUTH_SELF_ERROR'] = 'Не удалось изменить себя с администратора на пользователя';
 $lang['CLICK_RETURN_USERAUTH'] = '%sВернуться к управлению правами пользователей%s';
 $lang['CLICK_RETURN_GROUPAUTH'] = '%sВернуться к управлению правами групп%s';
 $lang['CLICK_RETURN_FORUMAUTH'] = '%sВернуться к управлению доступом к форумам%s';
diff --git a/library/language/uk/main.php b/library/language/uk/main.php
index 7ac037a5..a2b69554 100644
--- a/library/language/uk/main.php
+++ b/library/language/uk/main.php
@@ -1711,6 +1711,8 @@ $lang['USER_AUTH_UPDATED'] = 'Права користувача змінено';
 $lang['GROUP_AUTH_UPDATED'] = 'Права групи змінено';
 
 $lang['AUTH_UPDATED'] = 'Права доступу змінено';
+$lang['AUTH_GENERAL_ERROR'] = 'Не вдалося оновити статус адміністратора';
+$lang['AUTH_SELF_ERROR'] = 'Не вдалося змінити себе з адміністратора на користувача';
 $lang['CLICK_RETURN_USERAUTH'] = '%sВернуться до управління правами користувачів%s';
 $lang['CLICK_RETURN_GROUPAUTH'] = '%sВернуться до управління правами груп%s';
 $lang['CLICK_RETURN_FORUMAUTH'] = '%sВернуться до управління доступом до форумів%s';