diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 74a496ad2..9a977efcd 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -31,6 +31,3 @@ parameters:
             message: '#^Array has 2 duplicate keys with value .ClassWithConstants\.SOME_KEY. \(\\Doctrine\\Tests\\Annotations\\Fixtures\\ClassWithConstants::SOME_KEY, \\Doctrine\\Tests\\Annotations\\Fixtures\\ClassWithConstants::SOME_KEY\)\.$#'
             path: '%currentWorkingDirectory%/tests\Doctrine\Tests\Annotations\DocParserTest.php'
         # bug in doctrine/lexer
-        -
-            message: '#^Call to static method PHPUnit\\Framework\\Assert::assertNull\(\) with array will always evaluate to false\.$#'
-            path: '%currentWorkingDirectory%/tests\Doctrine\Tests\Annotations\DocLexerTest.php'
diff --git a/tests/Doctrine/Tests/Annotations/AbstractReaderTest.php b/tests/Doctrine/Tests/Annotations/AbstractReaderTest.php
index fa75b619a..69aaf3088 100644
--- a/tests/Doctrine/Tests/Annotations/AbstractReaderTest.php
+++ b/tests/Doctrine/Tests/Annotations/AbstractReaderTest.php
@@ -478,12 +478,10 @@ public function testGloballyIgnoredAnnotationNotIgnored() : void
         $reader = $this->getReader();
         $class  = new \ReflectionClass(Fixtures\ClassDDC1660::class);
 
-        $testLoader = static function (string $className) : bool {
+        $testLoader = static function (string $className) : void {
             if ($className === 'since') {
                 throw new \InvalidArgumentException('Globally ignored annotation names should never be passed to an autoloader.');
             }
-
-            return false;
         };
 
         spl_autoload_register($testLoader, true, true);
diff --git a/tests/Doctrine/Tests/Annotations/AnnotationReaderTest.php b/tests/Doctrine/Tests/Annotations/AnnotationReaderTest.php
index f8c71e199..20b0786b3 100644
--- a/tests/Doctrine/Tests/Annotations/AnnotationReaderTest.php
+++ b/tests/Doctrine/Tests/Annotations/AnnotationReaderTest.php
@@ -144,11 +144,10 @@ public function testGloballyIgnoredAnnotationNotIgnored() : void
     {
         $reader = $this->getReader();
         $class  = new \ReflectionClass(Fixtures\ClassDDC1660::class);
-        $testLoader = static function (string $className) : bool {
+        $testLoader = static function (string $className) : void {
             if ($className === 'since') {
                 throw new \InvalidArgumentException('Globally ignored annotation names should never be passed to an autoloader.');
             }
-            return false;
         };
         spl_autoload_register($testLoader, true, true);
         try {