diff --git a/src/Symfony/Component/OptionsResolver/OptionsResolver.php b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
index bc2546397a47..370fd579f95c 100644
--- a/src/Symfony/Component/OptionsResolver/OptionsResolver.php
+++ b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
@@ -201,7 +201,7 @@ public function setDefault($option, $value)
                 return $this;
             }
 
-            if (isset($params[0]) && null !== ($class = $params[0]->getClass()) && self::class === $class->name && (!isset($params[1]) || (null !== ($class = $params[1]->getClass()) && Options::class === $class->name))) {
+            if (isset($params[0]) && null !== ($type = $params[0]->getType()) && self::class === $type->getName() && (!isset($params[1]) || (null !== ($type = $params[1]->getType()) && Options::class === $type->getName()))) {
                 // Store closure for later evaluation
                 $this->nested[$option][] = $value;
                 $this->defaults[$option] = [];
diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index f3b24e420f32..b98d58273867 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -522,9 +522,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
     protected function denormalizeParameter(\ReflectionClass $class, \ReflectionParameter $parameter, $parameterName, $parameterData, array $context, $format = null)
     {
         try {
-            if (\PHP_VERSION_ID < 70100 && null !== $parameterClass = $parameter->getClass()) {
-                $parameterClass = $parameterClass->name;
-            } elseif (\PHP_VERSION_ID >= 70100 && $parameter->hasType() && ($parameterType = $parameter->getType()) && !$parameterType->isBuiltin()) {
+            if ($parameter->hasType() && ($parameterType = $parameter->getType()) && !$parameterType->isBuiltin()) {
                 $parameterClass = $parameterType->getName();
                 new \ReflectionClass($parameterClass); // throws a \ReflectionException if the class doesn't exist
             } else {