diff --git a/admin/admin.php b/admin/admin.php
index 24c6ee3..9c65ce3 100644
--- a/admin/admin.php
+++ b/admin/admin.php
@@ -308,7 +308,7 @@ public function options_validate( array $input ): array {
 					break;
 				case 'comment_policy':
 				case 'clean_emails':
-				case 'disable_email_all_commenters':	
+				case 'disable_email_all_commenters':
 					$input[ $key ] = $this->sanitize_bool( $value );
 					break;
 				case 'email_subject':