diff --git a/manifests/config/authmethod.pp b/manifests/config/authmethod.pp
index d5614cf..c5b9cd2 100644
--- a/manifests/config/authmethod.pp
+++ b/manifests/config/authmethod.pp
@@ -1,94 +1,94 @@
 # @summary
 #   Manage Icinga Web 2 authentication methods. Auth methods may be chained by setting proper ordering.
 #
 # @param [Enum['external', 'ldap', 'msldap', 'db']] backend
 #   Select between 'external', 'ldap', 'msldap' or 'db'. Each backend may require other settings.
 #
 # @param [Optional[String]] resource
 #   The name of the resource defined in resources.ini.
 #
 # @param [Optional[String]] ldap_user_class
-#   LDAP user class. Only valid if `backend` is `ldap`.
+#   LDAP user class. Only valid if `backend` is `ldap` or `msldap`.
 #
 # @param [Optional[String]] ldap_user_name_attribute
-#   LDAP attribute which contains the username. Only valid if `backend` is `ldap`.
+#   LDAP attribute which contains the username. Only valid if `backend` is `ldap` or `msldap`.
 #
 # @param [Optional[String]] ldap_filter
-#   LDAP search filter. Only valid if `backend` is `ldap`.
+#   LDAP search filter. Only valid if `backend` is `ldap` or `msladap`.
 #
 # @param [Optional[String]] ldap_base_dn
-#   LDAP base DN. Only valid if `backend` is `ldap`.
+#   LDAP base DN. Only valid if `backend` is `ldap` or `msldap`.
 #
 # @param [Optional[String]] domain
 #   Domain for domain-aware authentication
 #
 # @param [Variant[String, Integer]] order
 #   Multiple authentication methods can be chained. The order of entries in the authentication
 #   configuration determines the order of the authentication methods.
 #
 # @example Create an authentication method (db) and reference to a resource:
 #   icingaweb2::config::authmethod { 'db-auth':
 #     backend  => 'db',
 #     resource => 'my-sql',
 #     order    => 20,
 #   }
 #
 # @example Create a LDAP authmethod:
 #   icingaweb2::config::authmethod { 'ldap-auth':
 #     backend                  => 'ldap',
 #     resource                 => 'my-ldap',
 #     ldap_user_class          => 'user',
 #     ldap_filter              => '(memberof:1.2.840.113556.1.4.1941:=CN=monitoring,OU=groups,DC=icinga,DC=com)',
 #     ldap_user_name_attribute => 'userPrincipalName',
 #     order                    => '05',
 #   }
 #
 define icingaweb2::config::authmethod(
   Enum['external', 'ldap', 'msldap', 'db'] $backend                  = undef,
   Optional[String]                         $resource                 = undef,
   Optional[String]                         $ldap_user_class          = undef,
   Optional[String]                         $ldap_user_name_attribute = undef,
   Optional[String]                         $ldap_filter              = undef,
   Optional[String]                         $ldap_base_dn             = undef,
   Optional[String]                         $domain                   = undef,
   Variant[String, Integer]                 $order                    = '01',
 ) {
 
   $conf_dir = $::icingaweb2::globals::conf_dir
 
   case $backend {
     'external': {
       $settings = {
         'backend' => $backend,
       }
     }
-    'ldap': {
+    'ldap', 'msladp': {
       $settings = {
         'backend'             => $backend,
         'resource'            => $resource,
         'user_class'          => $ldap_user_class,
         'user_name_attribute' => $ldap_user_name_attribute,
         'filter'              => $ldap_filter,
         'base_dn'             => $ldap_base_dn,
         'domain'              => $domain,
       }
     }
-    'msldap', 'db': {
+    'db': {
       $settings = {
         'backend'  => $backend,
         'resource' => $resource,
         'domain'   => $domain,
       }
     }
     default: {
       fail('The backend type you provided is not supported.')
     }
   }
 
   icingaweb2::inisection { "authmethod-${title}":
     section_name => $title,
     target       => "${conf_dir}/authentication.ini",
     settings     => delete_undef_values($settings),
     order        => $order,
   }
 }