diff --git a/src/Component/ComponentItemFactory.php b/src/Component/ComponentItemFactory.php
index ee4d165..9979330 100644
--- a/src/Component/ComponentItemFactory.php
+++ b/src/Component/ComponentItemFactory.php
@@ -149,7 +149,7 @@ private function createFakeParamValues(array $parameters, array $variation): arr
             if (\is_array($type)) {
                 $paramValue[$name] = $this->createVariationParameters($type, $variation[$name] ?? []);
             } else {
-                if (array_key_exists($name, $variation) && is_null($variation[$name])) {
+                if (\array_key_exists($name, $variation) && null === $variation[$name]) {
                     $paramValue = [$name => null];
                 } else {
                     $paramValue = $this->faker->getFakeData([$name => $type], $variation[$name] ?? null);
diff --git a/tests/Functional/Service/ComponentItemFactoryTest.php b/tests/Functional/Service/ComponentItemFactoryTest.php
index 3aa92ef..915705d 100644
--- a/tests/Functional/Service/ComponentItemFactoryTest.php
+++ b/tests/Functional/Service/ComponentItemFactoryTest.php
@@ -140,7 +140,7 @@ public function testFactoryCreatesDefaultVariationWithParameterTypes(): void
         self::assertIsFloat($component->getVariations()['default']['complex']['amount']);
     }
 
-    public function testCreateObjectParameter()
+    public function testCreateObjectParameter(): void
     {
         $data = [
             'name' => 'component',
@@ -156,11 +156,11 @@ public function testCreateObjectParameter()
                 'variation1' => [
                     'car' => [
                         'color' => 'blue',
-                    ]
+                    ],
                 ],
                 'variation2' => [
                     'car' => null,
-                ]
+                ],
             ],
         ];