diff --git a/lib/ycom.php b/lib/ycom.php
index 785dec20..d2169e61 100644
--- a/lib/ycom.php
+++ b/lib/ycom.php
@@ -11,7 +11,7 @@ public static function addTable(string $table_name): void
     }
 
     /**
-     * @return string[]
+     * @return array<string>
      */
     public static function getTables(): array
     {
diff --git a/lib/ycom_user.php b/lib/ycom_user.php
index 5ee96b1a..56527e66 100644
--- a/lib/ycom_user.php
+++ b/lib/ycom_user.php
@@ -1,12 +1,12 @@
 <?php
 
-class rex_ycom_user extends \rex_yform_manager_dataset
+class rex_ycom_user extends rex_yform_manager_dataset
 {
     public string $password = '';
     public int $login_tries = 0;
 
     /**
-     * @return null|rex_ycom_user
+     * @return rex_ycom_user|null
      */
     public static function getMe()
     {
@@ -36,7 +36,7 @@ public function getPassword(): string
     }
 
     /**
-     * @return array|string[]
+     * @return array|array<string>
      */
     public function getGroups(): array
     {
@@ -49,7 +49,7 @@ public function getGroups(): array
 
     /**
      * @param array<string|int, mixed> $data
-     * @return null|rex_ycom_user|rex_yform_manager_dataset
+     * @return rex_ycom_user|rex_yform_manager_dataset|null
      */
     public static function createUserByEmail(array $data)
     {
diff --git a/plugins/auth/install.php b/plugins/auth/install.php
index 6af7d865..e653d172 100644
--- a/plugins/auth/install.php
+++ b/plugins/auth/install.php
@@ -66,7 +66,6 @@
         ->setQuery('delete from `' . rex_yform_manager_field::table() . '` where `table_name`="rex_ycom_user" and `type_id`="value" and `type_name`="checkbox" and `name`="termofuse_accepted"', [])
         ->setQuery('update `rex_config` set `key`="article_id_jump_termsofuse" where `key`="article_id_jump_termofuse" and `namespace`="ycom/auth"', [])
         ->setQuery('delete from `' . rex_yform_manager_field::table() . '` where `table_name`="rex_ycom_user" and `type_id`="value" and `type_name`="generate_key" and `name`="session_key"');
-
 } catch (rex_sql_exception $e) {
     dump($e);
     exit;
diff --git a/plugins/auth/lib/ycom_auth.php b/plugins/auth/lib/ycom_auth.php
index b901ecba..9df448d2 100644
--- a/plugins/auth/lib/ycom_auth.php
+++ b/plugins/auth/lib/ycom_auth.php
@@ -371,7 +371,7 @@ public static function login(array $params): int
 
     /**
      * @param array<string, string> $params
-     * @return null|false|rex_ycom_user
+     * @return false|rex_ycom_user|null
      */
     public static function loginWithParams($params, ?callable $filter = null)
     {
@@ -428,13 +428,13 @@ public static function checkPassword(string $password, $user_id): bool
 
     public static function setUser(rex_ycom_user $me): void
     {
-        \rex_login::startSession();
+        rex_login::startSession();
         self::setSessionVar('UID', $me->getId());
         self::$me = $me;
     }
 
     /**
-     * @return null|rex_ycom_user
+     * @return rex_ycom_user|null
      */
     public static function getUser()
     {
@@ -596,8 +596,8 @@ public static function cleanReferer(string $refererURL): string
     }
 
     /**
-     * @param string[] $returnTos
-     * @param string[] $allowedDomains
+     * @param array<string> $returnTos
+     * @param array<string> $allowedDomains
      */
     public static function getReturnTo(array $returnTos, array $allowedDomains): string
     {
diff --git a/plugins/auth/lib/ycom_auth_rules.php b/plugins/auth/lib/ycom_auth_rules.php
index 83bb9efc..c90bcd36 100644
--- a/plugins/auth/lib/ycom_auth_rules.php
+++ b/plugins/auth/lib/ycom_auth_rules.php
@@ -97,7 +97,7 @@ public function check(rex_ycom_user $user, string $rule_name = 'login_try_5_paus
     }
 
     /**
-     * @return string[]
+     * @return array<string>
      */
     public function getOptions(): array
     {
diff --git a/plugins/auth/lib/yform/trait_value_auth_extern.php b/plugins/auth/lib/yform/trait_value_auth_extern.php
index 50889c56..a04c2645 100644
--- a/plugins/auth/lib/yform/trait_value_auth_extern.php
+++ b/plugins/auth/lib/yform/trait_value_auth_extern.php
@@ -4,7 +4,7 @@ trait rex_yform_trait_value_auth_extern
 {
     /**
      * @throws rex_exception
-     * @return array|string[]
+     * @return array|array<string>
      */
     private function auth_loadSettings(): array
     {
diff --git a/plugins/auth/lib/yform/value/ycom_auth_cas.php b/plugins/auth/lib/yform/value/ycom_auth_cas.php
index 2b95b7b6..49905447 100644
--- a/plugins/auth/lib/yform/value/ycom_auth_cas.php
+++ b/plugins/auth/lib/yform/value/ycom_auth_cas.php
@@ -11,7 +11,7 @@
 
 class rex_yform_value_ycom_auth_cas extends rex_yform_value_abstract
 {
-    /** @var array|string[] */
+    /** @var array|array<string> */
     private static array $requestAuthFunctions = ['auth', 'logout'];
     private string $casFile = 'cas.php';
 
@@ -19,7 +19,7 @@ public function enterObject(): void
     {
         rex_login::startSession();
 
-        $casConfigPath = \rex_addon::get('ycom')->getDataPath($this->casFile);
+        $casConfigPath = rex_addon::get('ycom')->getDataPath($this->casFile);
         if (!file_exists($casConfigPath)) {
             throw new rex_exception('CAS Settings file not found [' . $casConfigPath . ']');
         }
@@ -112,16 +112,16 @@ public function enterObject(): void
         $params['ignorePassword'] = true;
         $params['loginPassword'] = '';
 
-        $loginStatus = \rex_ycom_auth::login($params);
+        $loginStatus = rex_ycom_auth::login($params);
         if (rex_ycom_auth::STATUS_HAS_LOGGED_IN == $loginStatus) {
             // already logged in
             rex_ycom_user::updateUser($data);
             rex_response::sendCacheControl();
-            \rex_response::sendRedirect($returnTo);
+            rex_response::sendRedirect($returnTo);
         }
 
         // if user not found, check if exists, but no permission
-        $user = \rex_ycom_user::query()->where('email', $data['email'])->findOne();
+        $user = rex_ycom_user::query()->where('email', $data['email'])->findOne();
         if ($user) {
             $this->params['warning_messages'][] = ('' != $this->getElement(2)) ? $this->getElement(2) : '{{ saml.error.ycom_login_failed }}';
             return;
@@ -142,7 +142,7 @@ public function enterObject(): void
         $params['loginStay'] = false;
         $params['filter'] = [];
         $params['loginPassword'] = '';
-        $loginStatus = \rex_ycom_auth::login($params);
+        $loginStatus = rex_ycom_auth::login($params);
 
         if (rex_ycom_auth::STATUS_HAS_LOGGED_IN != $loginStatus) {
             if ($this->params['debug']) {
diff --git a/plugins/auth/lib/yform/value/ycom_auth_oauth2.php b/plugins/auth/lib/yform/value/ycom_auth_oauth2.php
index a1c70abd..39dccaf6 100644
--- a/plugins/auth/lib/yform/value/ycom_auth_oauth2.php
+++ b/plugins/auth/lib/yform/value/ycom_auth_oauth2.php
@@ -14,15 +14,16 @@
 
 use League\OAuth2\Client\Provider\Exception\IdentityProviderException;
 use League\OAuth2\Client\Provider\GenericProvider;
+use League\OAuth2\Client\Token\AccessToken;
 
 class rex_yform_value_ycom_auth_oauth2 extends rex_yform_value_abstract
 {
     use rex_yform_trait_value_auth_extern;
 
-    /** @var array|string[] */
+    /** @var array|array<string> */
     private array $auth_requestFunctions = ['init', 'code', 'state'];
     private bool $auth_directLink = false;
-    /** @var array|string[] */
+    /** @var array|array<string> */
     private array $auth_SessionVars = ['OAUTH2_oauth2state'];
     private string $auth_ClassKey = 'oauth2';
 
@@ -74,7 +75,7 @@ public function enterObject(): void
 
                     $accessToken = null;
                     try {
-                        /** @var \League\OAuth2\Client\Token\AccessToken $accessToken */
+                        /** @var AccessToken $accessToken */
                         $accessToken = $provider->getAccessToken('authorization_code', [
                             'code' => $code,
                         ]);
diff --git a/plugins/auth/lib/yform/value/ycom_auth_saml.php b/plugins/auth/lib/yform/value/ycom_auth_saml.php
index 8c4f5498..4b155515 100644
--- a/plugins/auth/lib/yform/value/ycom_auth_saml.php
+++ b/plugins/auth/lib/yform/value/ycom_auth_saml.php
@@ -20,10 +20,10 @@ class rex_yform_value_ycom_auth_saml extends rex_yform_value_abstract
 {
     use rex_yform_trait_value_auth_extern;
 
-    /** @var array|string[] */
+    /** @var array|array<string> */
     private array $auth_requestFunctions = ['auth', 'sso', 'acs', 'slo', 'sls'];
     private bool $auth_directLink = false;
-    /** @var array|string[] */
+    /** @var array|array<string> */
     private array $auth_SessionVars = ['SAML_Userdata', 'SAML_NameId', 'SAML_SessionIndex', 'SAML_AuthNRequestID', 'SAML_LogoutRequestID', 'SAML_NameIdFormat', 'SAML_ssoDate'];
     private string $auth_ClassKey = 'saml';
 
diff --git a/plugins/group/lib/ycom_group.php b/plugins/group/lib/ycom_group.php
index a928cfc8..b79576d0 100644
--- a/plugins/group/lib/ycom_group.php
+++ b/plugins/group/lib/ycom_group.php
@@ -4,7 +4,7 @@
 
 class rex_ycom_group extends rex_yform_manager_dataset
 {
-    /** @var string[] */
+    /** @var array<string> */
     public static array $perms = [
         '0' => 'translate:ycom_group_forallgroups',
         '1' => 'translate:ycom_group_inallgroups',
@@ -14,7 +14,7 @@ class rex_ycom_group extends rex_yform_manager_dataset
 
     /**
      * @throws rex_exception
-     * @return string[]
+     * @return array<string>
      */
     public static function getGroups(): array
     {
diff --git a/plugins/media_auth/boot.php b/plugins/media_auth/boot.php
index 3fdcfab3..2f822481 100644
--- a/plugins/media_auth/boot.php
+++ b/plugins/media_auth/boot.php
@@ -15,7 +15,7 @@
         return false;
     }
     $rex_media = $ep->getParam('element');
-    return \rex_ycom_media_auth::checkFrontendPerm($rex_media);
+    return rex_ycom_media_auth::checkFrontendPerm($rex_media);
 });
 
 rex_extension::register(['MEDIA_MANAGER_BEFORE_SEND'], static function (rex_extension_point $ep) {
diff --git a/plugins/media_auth/lib/ycom_media_auth.php b/plugins/media_auth/lib/ycom_media_auth.php
index 939c6d66..4cffe33b 100644
--- a/plugins/media_auth/lib/ycom_media_auth.php
+++ b/plugins/media_auth/lib/ycom_media_auth.php
@@ -4,7 +4,7 @@
 
 class rex_ycom_media_auth extends rex_yform_manager_dataset
 {
-    /** @var string[] */
+    /** @var array<string> */
     public static array $perms = [
         '0' => 'translate:ycom_perm_all',
         '1' => 'translate:ycom_perm_only_logged_in',
diff --git a/plugins/media_auth/lib/ycom_media_auth_rules.php b/plugins/media_auth/lib/ycom_media_auth_rules.php
index 41f419cd..340a34dc 100644
--- a/plugins/media_auth/lib/ycom_media_auth_rules.php
+++ b/plugins/media_auth/lib/ycom_media_auth_rules.php
@@ -6,7 +6,7 @@
 
 class rex_ycom_media_auth_rules
 {
-    /** @var array<string, array{'info': string, 'action': string[]}> */
+    /** @var array<string, array{'info': string, 'action': array<string>}> */
     private array $rules;
 
     public function __construct()
@@ -84,7 +84,7 @@ public function check($rule_name): void
     }
 
     /**
-     * @return string[]
+     * @return array<string>
      */
     public function getOptions(): array
     {
diff --git a/tests/unit/login_test.php b/tests/unit/login_test.php
index 1b8d553f..9aae7510 100644
--- a/tests/unit/login_test.php
+++ b/tests/unit/login_test.php
@@ -18,7 +18,6 @@ public function testLogin()
         ];
 
         $status = rex_ycom_auth::login($params);
-        static::assertEquals(rex_ycom_auth::STATUS_LOGIN_FAILED, $status);
-
+        self::assertEquals(rex_ycom_auth::STATUS_LOGIN_FAILED, $status);
     }
 }