diff --git a/app/Services/Ldap/LdapAuthService.php b/app/Services/Ldap/LdapAuthService.php
index fb8e17d..bfae62c 100644
--- a/app/Services/Ldap/LdapAuthService.php
+++ b/app/Services/Ldap/LdapAuthService.php
@@ -51,7 +51,7 @@ class LdapAuthService
         // Benötigte Werte aus der LDAP-Konfiguration auslesen.
         // Falls einzelne Werte fehlen, werden sinnvolle Standardwerte gesetzt.
         $server       = (string)($this->config['server'] ?? '');
-        $port         = (int)($this->config['port'] ?? 636);
+        $port         = (int)($this->config['port'] ?? 389);
         $domainSuffix = (string)($this->config['domain_suffix'] ?? '');
         $timeout      = (int)($this->config['timeout'] ?? 5);