diff --git a/typo3/sysext/core/Classes/Utility/CommandUtility.php b/typo3/sysext/core/Classes/Utility/CommandUtility.php
index a1a894cd6435da9feee38cee20f3cb5dd04d6fe9..731ede0cf655487831c1cc49bf093ad0215741c7 100644
--- a/typo3/sysext/core/Classes/Utility/CommandUtility.php
+++ b/typo3/sysext/core/Classes/Utility/CommandUtility.php
@@ -159,7 +159,7 @@ class CommandUtility
             return -1;
         }
         // Already checked and valid
-        if (self::$applications[$cmd]['valid']) {
+        if (self::$applications[$cmd]['valid'] ?? false) {
             return true;
         }
         // Is set but was (above) not TRUE
diff --git a/typo3/sysext/rsaauth/Tests/Unit/Backend/CommandLineBackendTest.php b/typo3/sysext/rsaauth/Tests/Unit/Backend/CommandLineBackendTest.php
index e1bad6f90a41e342f58ab5742c3b49b9bc8baa32..0101a0e188d1b0c36e65223e92edf03552b9c1ec 100644
--- a/typo3/sysext/rsaauth/Tests/Unit/Backend/CommandLineBackendTest.php
+++ b/typo3/sysext/rsaauth/Tests/Unit/Backend/CommandLineBackendTest.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types = 1);
 namespace TYPO3\CMS\Rsaauth\Tests\Unit\Backend;
 
 /*
@@ -15,17 +16,13 @@ namespace TYPO3\CMS\Rsaauth\Tests\Unit\Backend;
  */
 
 use TYPO3\CMS\Rsaauth\Backend\CommandLineBackend;
+use TYPO3\TestingFramework\Core\Unit\UnitTestCase;
 
 /**
  * Test case.
  */
-class CommandLineBackendTest extends \TYPO3\TestingFramework\Core\Unit\UnitTestCase
+class CommandLineBackendTest extends UnitTestCase
 {
-    /**
-     * Subject is not notice free, disable E_NOTICES
-     */
-    protected static $suppressNotices = true;
-
     /**
      * @var CommandLineBackend
      */