diff --git a/resources/lang/en_US/validation.php b/resources/lang/en_US/validation.php
index f05a3dc6eb..f252520b3c 100644
--- a/resources/lang/en_US/validation.php
+++ b/resources/lang/en_US/validation.php
@@ -24,6 +24,7 @@ declare(strict_types=1);
 
 return [
     'no_auth_present'                 => 'Looks like you\'re not authenticated',
+    'unique_currency_symbol' => 'The currency symbol is already in use.',
     'bad_url_parts'                   => 'The redirect URL is invalid.',
     'verifying_password'              => 'Verifying password...',
     'invalid_account_list'            => 'Invalid account type list entry ":value"',