diff --git a/conf/class.auth.ldap.php b/conf/class.auth.ldap.php
index d6ab2e2..49ddcc9 100644
--- a/conf/class.auth.ldap.php
+++ b/conf/class.auth.ldap.php
@@ -1,13 +1,15 @@
 <?php
+use Dotclear\App;
+use Dotclear\Core\Auth;
 class ldapDcAuth extends Auth
 {
     # The user can't change his password
-    protected $allow_pass_change = false;
+    protected bool $allow_pass_change = false;
 
     # LDAP parameter
-    private $server = "localhost";
-    private $port = "389";
-    private $base = "dc=yunohost,dc=org";
+    private string $server = "localhost";
+    private string $port = "389";
+    private string $base = "dc=yunohost,dc=org";
 
     public function checkUser(string $user_id, ?string $pwd = NULL, ?string $user_key = NULL, bool $check_blog = true): bool
     {
@@ -56,9 +58,9 @@ class ldapDcAuth extends Auth
                         }
 
                         # If the user exist, then we just update his password.
-                        if (dcCore::app()->userExists($user_id))
+                        if (App::users()->userExists($user_id))
                         {
-                            $this->sudo(array(dcCore::app(), 'updUser'), $user_id, $cur);
+                            $this->sudo(array(App::users(), 'updUser'), $user_id, $cur);
                         }
                         # If not, we create him.
                         # In order for him to connect,
@@ -69,7 +71,7 @@ class ldapDcAuth extends Auth
                             $cur->user_lang = 'fr';                         # Can change this, PR are welcome
                             $cur->user_tz = 'Europe/Paris';                 # Can change this, PR are welcome
                             $cur->user_default_blog = 'default';            # Can change this, PR are welcome
-                            $this->sudo(array(dcCore::app(),'addUser'), $cur);
+                            $this->sudo(array(App::users(),'addUser'), $cur);
                             # Possible roles:
                             # admin "administrator"
                             #   contentadmin "manage all entries and comments"
@@ -100,7 +102,7 @@ class ldapDcAuth extends Auth
                                     $set_perms[$perm_id] = true;
                                 }
                             }
-                            $this->sudo(array(dcCore::app(), 'setUserBlogPermissions'), $user_id, 'default', $set_perms, true);
+                            $this->sudo(array(App::users(), 'setUserBlogPermissions'), $user_id, 'default', $set_perms, true);
                         }
 
                         $this->con->commit();
diff --git a/scripts/install b/scripts/install
index 19755e4..f04c718 100755
--- a/scripts/install
+++ b/scripts/install
@@ -95,8 +95,10 @@ ynh_add_config --template="../conf/class.auth.ldap.php" --destination="$install_
 
 cat << EOF >> $php_config
 
-require dirname(__FILE__).'/class.auth.ldap.php';
-define('DC_AUTH_CLASS','ldapDcAuth');
+require_once dirname(__FILE__).'/class.auth.ldap.php';
+define('DC_AUTH_LDAP','ldapDcAuth');
+use Dotclear\Helper\Container\Factories;
+Factories::addService("core", AuthInterface::class, DC_AUTH_LDAP);
 EOF
 
 ynh_store_file_checksum --file=$php_config
diff --git a/scripts/upgrade b/scripts/upgrade
index 74f06d6..dbcf199 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -116,8 +116,10 @@ ynh_add_config --template="../conf/class.auth.ldap.php" --destination="$install_
 
 cat << EOF >> $php_config
 
-require dirname(__FILE__).'/class.auth.ldap.php';
-define('DC_AUTH_CLASS','ldapDcAuth');
+require_once dirname(__FILE__).'/class.auth.ldap.php';
+define('DC_AUTH_LDAP','ldapDcAuth');
+use Dotclear\Helper\Container\Factories;
+Factories::addService("core", AuthInterface::class, DC_AUTH_LDAP);
 EOF
 
 # Recalculate and store the checksum of the file for the next upgrade.