diff --git a/lam/templates/misc/ajax.php b/lam/templates/misc/ajax.php
index cb75672fb..93dabba52 100644
--- a/lam/templates/misc/ajax.php
+++ b/lam/templates/misc/ajax.php
@@ -406,7 +406,6 @@ class Ajax {
 	private function dnSelection(): string {
 		$dn = trim($_POST['dn']);
 		if (empty($dn) || !get_preg($dn, 'dn')) {
-			$dnList = $this->getDefaultDns();
 			return '';
 		}
 		else {
@@ -414,9 +413,6 @@ class Ajax {
 		}
 		$html = $this->buildDnSelectionHtml($dnList, $dn);
 		$json = json_encode(['dialogData' => $html], JSON_THROW_ON_ERROR);
-		if ($json === false) {
-			return '';
-		}
 		return $json;
 	}
 
diff --git a/phpstan.neon b/phpstan.neon
index 1ac9c7e93..8941d22e2 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -34,6 +34,6 @@ parameters:
 		- '#Parameter \#1 \$array of function array_keys expects array, mixed given.#'
 		- '#Argument of an invalid type mixed supplied for foreach, only iterables are supported.#'
 		- '#Parameter \#2 \$args of function call_user_func_array expects array<int\|string, mixed>, mixed given.#'
-		- '#Parameter \#1 \$input of method LAM\\AJAX\\Ajax::managePasswordChange\(\) expects array, mixed given.#'
+		- '#Parameter \#1 \$input of static method LAM\\AJAX\\Ajax::managePasswordChange\(\) expects array, mixed given.#'
 		- '#Parameter \#1 \$input of method LAM\\AJAX\\Ajax::checkPasswordStrength\(\) expects array, mixed given.#'
 		- '#Cannot access offset non-falsy-string on array<int\|string, string>\|object.#'