diff --git a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
index c76b57bb6a..a1cff53535 100644
--- a/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
+++ b/src/Symfony/Component/HttpKernel/Controller/ControllerResolver.php
@@ -36,6 +36,13 @@ class ControllerResolver implements ControllerResolverInterface
      */
     private $supportsVariadic;
 
+    /**
+     * If scalar types exists.
+     *
+     * @var bool
+     */
+    private $supportsScalarTypes;
+
     /**
      * Constructor.
      *
@@ -46,6 +53,7 @@ class ControllerResolver implements ControllerResolverInterface
         $this->logger = $logger;
 
         $this->supportsVariadic = method_exists('ReflectionParameter', 'isVariadic');
+        $this->supportsScalarTypes = method_exists('ReflectionParameter', 'getType');
     }
 
     /**
@@ -132,7 +140,7 @@ class ControllerResolver implements ControllerResolverInterface
                 $arguments[] = $request;
             } elseif ($param->isDefaultValueAvailable()) {
                 $arguments[] = $param->getDefaultValue();
-            } elseif ($param->allowsNull()) {
+            } elseif ($this->supportsScalarTypes && $param->hasType() && $param->allowsNull()) {
                 $arguments[] = null;
             } else {
                 if (is_array($controller)) {
diff --git a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
index 9aa7e20a9a..f3b0ac025d 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Controller/ControllerResolverTest.php
@@ -223,6 +223,19 @@ class ControllerResolverTest extends \PHPUnit_Framework_TestCase
         $mock->getController($request);
     }
 
+    /**
+     * @expectedException \RuntimeException
+     */
+    public function testIfExceptionIsThrownWhenMissingAnArgument()
+    {
+        $resolver = new ControllerResolver();
+        $request = Request::create('/');
+
+        $controller = array($this, 'controllerMethod1');
+
+        $resolver->getArguments($request, $controller);
+    }
+
     /**
      * @requires PHP 7.1
      */