diff --git a/typo3/sysext/backend/Classes/Toolbar/Enumeration/InformationStatus.php b/typo3/sysext/backend/Classes/Toolbar/Enumeration/InformationStatus.php
index a8b2bf8b5b2c3f00ef642c960b634d22b09a8c9a..5a61e23c4a5fd46b872a42eeca042442faf2138f 100644
--- a/typo3/sysext/backend/Classes/Toolbar/Enumeration/InformationStatus.php
+++ b/typo3/sysext/backend/Classes/Toolbar/Enumeration/InformationStatus.php
@@ -68,6 +68,6 @@ final class InformationStatus extends Enumeration
      */
     public function isGreaterThan(InformationStatus $status)
     {
-        return static::$statusIntegerMap[(string)$this] > static::$statusIntegerMap[(string)$status];
+        return self::$statusIntegerMap[(string)$this] > self::$statusIntegerMap[(string)$status];
     }
 }
diff --git a/typo3/sysext/felogin/Classes/Updates/MigrateFeloginPlugins.php b/typo3/sysext/felogin/Classes/Updates/MigrateFeloginPlugins.php
index a8c02e7bf997d347fd6701da63924e23e77c50a0..28427244afc9a9a654a626eea9fa13c236e45396 100644
--- a/typo3/sysext/felogin/Classes/Updates/MigrateFeloginPlugins.php
+++ b/typo3/sysext/felogin/Classes/Updates/MigrateFeloginPlugins.php
@@ -179,7 +179,7 @@ final class MigrateFeloginPlugins implements UpgradeWizardInterface
      */
     protected function migrateFlexformSettings(string $oldValue): string
     {
-        $fieldNames = implode('|', static::$flexFormFields);
+        $fieldNames = implode('|', self::$flexFormFields);
         $pattern = '/<field index="(' . $fieldNames . ')">/';
         $replacement = '<field index="settings.$1">';
 
@@ -196,7 +196,7 @@ final class MigrateFeloginPlugins implements UpgradeWizardInterface
     {
         $constraints = [];
 
-        foreach (static::$flexFormFields as $flexFormField) {
+        foreach (self::$flexFormFields as $flexFormField) {
             $value = '%<field index="' . $flexFormField . '">%';
             $constraints[] = $queryBuilder->expr()->like('pi_flexform', $queryBuilder->createNamedParameter($value));
         }
diff --git a/typo3/sysext/form/Classes/Mvc/Property/Exception/TypeConverterException.php b/typo3/sysext/form/Classes/Mvc/Property/Exception/TypeConverterException.php
index 0de2ca9043dd20e03af74065a7d345f19906729d..3425cb8bb843394538b67e810393cf8ede9b611c 100644
--- a/typo3/sysext/form/Classes/Mvc/Property/Exception/TypeConverterException.php
+++ b/typo3/sysext/form/Classes/Mvc/Property/Exception/TypeConverterException.php
@@ -29,9 +29,7 @@ final class TypeConverterException extends \TYPO3\CMS\Extbase\Property\Exception
 
     public static function fromError(Error $error): TypeConverterException
     {
-        // [phpstan] Unsafe usage of new static()
-        // todo: Either mark this class or its constructor final or use new self instead.
-        $exception = new static($error->getMessage(), $error->getCode());
+        $exception = new self($error->getMessage(), $error->getCode());
         $exception->error = $error;
 
         return $exception;