diff --git a/tests/Serializer/JsonSerializationTest.php b/tests/Serializer/JsonSerializationTest.php
index 7f59ca0d7..9eed054e2 100644
--- a/tests/Serializer/JsonSerializationTest.php
+++ b/tests/Serializer/JsonSerializationTest.php
@@ -28,6 +28,7 @@
 use JMS\Serializer\Visitor\Factory\JsonSerializationVisitorFactory;
 use JMS\Serializer\Visitor\SerializationVisitorInterface;
 use PHPUnit\Framework\Attributes\DataProvider;
+use TypeError;
 
 class JsonSerializationTest extends BaseSerializationTestCase
 {
@@ -487,6 +488,7 @@ public function testFalseDataType()
     {
         if (PHP_VERSION_ID < 80200) {
             $this->markTestSkipped('False type requires PHP 8.2');
+
             return;
         }
 
@@ -500,11 +502,10 @@ public function testFalseDataType()
             $this->deserialize(static::getContent('data_false'), DataFalse::class),
         );
 
-        //What should we expect here?
-        self::assertEquals(
-            null,
-            $this->deserialize(static::getContent('data_true'), DataFalse::class),
-        );
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessage('Cannot assign true to property JMS\Serializer\Tests\Fixtures\DataFalse::$data of type false');
+
+        $this->deserialize(static::getContent('data_true'), DataFalse::class);
     }
 
     public function testDeserializingComplexDiscriminatedUnionProperties()