diff --git a/ModelDescriber/FormModelDescriber.php b/ModelDescriber/FormModelDescriber.php
index 07f5bcc..4694352 100644
--- a/ModelDescriber/FormModelDescriber.php
+++ b/ModelDescriber/FormModelDescriber.php
@@ -100,6 +100,12 @@ final class FormModelDescriber implements ModelDescriberInterface, ModelRegistry
                 }
                 if ('collection' === $blockPrefix) {
                     $subType = $config->getOption('entry_type');
+                    $property->setType('array');
+
+                    $model = new Model(new Type(Type::BUILTIN_TYPE_OBJECT, false, $subType), null);
+                    $property->getItems()->setRef($this->modelRegistry->register($model));
+                    $property->setExample(sprintf('[{%s}]', $subType));
+                    break;
                 }
 
                 if ('entity' === $blockPrefix) {
diff --git a/Tests/Functional/Form/UserType.php b/Tests/Functional/Form/UserType.php
index 8cf8742..8e7eb79 100644
--- a/Tests/Functional/Form/UserType.php
+++ b/Tests/Functional/Form/UserType.php
@@ -13,6 +13,7 @@ namespace Nelmio\ApiDocBundle\Tests\Functional\Form;
 
 use Nelmio\ApiDocBundle\Tests\Functional\Entity\User;
 use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\CollectionType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
@@ -20,7 +21,11 @@ class UserType extends AbstractType
 {
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
-        $builder->add('dummy', DummyType::class);
+        $builder
+            ->add('dummy', DummyType::class)
+            ->add('dummies', CollectionType::class, [
+                'entry_type' => DummyType::class
+            ]);
     }
 
     public function configureOptions(OptionsResolver $resolver)
diff --git a/Tests/Functional/FunctionalTest.php b/Tests/Functional/FunctionalTest.php
index f72b5fe..4bbd662 100644
--- a/Tests/Functional/FunctionalTest.php
+++ b/Tests/Functional/FunctionalTest.php
@@ -13,6 +13,7 @@ namespace Nelmio\ApiDocBundle\Tests\Functional;
 
 use EXSyst\Component\Swagger\Operation;
 use EXSyst\Component\Swagger\Tag;
+use Nelmio\ApiDocBundle\Tests\Functional\Form\DummyType;
 
 class FunctionalTest extends WebTestCase
 {
@@ -181,8 +182,13 @@ class FunctionalTest extends WebTestCase
             'type' => 'object',
             'properties' => [
                 'dummy' => ['$ref' => '#/definitions/DummyType'],
+                'dummies' => [
+                    'items' => ['$ref' => '#/definitions/DummyType'],
+                    'type' => 'array',
+                    'example' => sprintf('[{%s}]', DummyType::class)
+                ]
             ],
-            'required' => ['dummy'],
+            'required' => ['dummy', 'dummies'],
         ], $this->getModel('UserType')->toArray());
 
         $this->assertEquals([