diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 576645f..b8d541e 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -24,6 +24,12 @@ public function getConfigTreeBuilder()
 
         $rootNode->children()->booleanNode('indexer')->defaultFalse();
 
+        /** @var ArrayNodeDefinition $types */
+        $types = $rootNode->children()->arrayNode('types');
+        $types->defaultValue([]);
+        $types = $types->prototype('array');
+        $types->prototype('scalar');
+
         $formats = $rootNode->children()->arrayNode('formats');
         $formats->isRequired();
         $formats->requiresAtLeastOneElement();
diff --git a/DependencyInjection/PageMediaSetExtension.php b/DependencyInjection/PageMediaSetExtension.php
index 2da6642..8282ac4 100644
--- a/DependencyInjection/PageMediaSetExtension.php
+++ b/DependencyInjection/PageMediaSetExtension.php
@@ -32,6 +32,8 @@ public function load(array $configs, ContainerBuilder $container)
             $loader->load('indexer.yml');
         }
 
+        $container->setParameter('page_media_set.types', $configs['types']);
+
         $repository = $container->getDefinition('page_media_set.format_repository');
         foreach ($configs['formats'] as $name => $format) {
             $id = 'page_media_set.format.' . $name;
diff --git a/EventListener/PageMediaSetFormAdaptorListener.php b/EventListener/PageMediaSetFormAdaptorListener.php
index b54e01a..d68cd88 100644
--- a/EventListener/PageMediaSetFormAdaptorListener.php
+++ b/EventListener/PageMediaSetFormAdaptorListener.php
@@ -6,6 +6,7 @@
 use ArsThanea\PageMediaSetBundle\Form\FormWidget;
 use ArsThanea\PageMediaSetBundle\Form\PageMediaCollectionAdminType;
 use ArsThanea\PageMediaSetBundle\Service\HasMediaSetInterface;
+use ArsThanea\PageMediaSetBundle\Service\MediaSetDefinitionInterface;
 use Doctrine\Common\Collections\ArrayCollection;
 use Kunstmaan\AdminBundle\Helper\FormWidgets\Tabs\Tab;
 use Kunstmaan\NodeBundle\Event\AdaptFormEvent;
@@ -18,9 +19,15 @@ class PageMediaSetFormAdaptorListener
      */
     private $repository;
 
-    public function __construct(PageMediaRepository $repository)
+    /**
+     * @var MediaSetDefinitionInterface
+     */
+    private $mediaSetDefinition;
+
+    public function __construct(PageMediaRepository $repository, MediaSetDefinitionInterface $mediaSetDefinition)
     {
         $this->repository = $repository;
+        $this->mediaSetDefinition = $mediaSetDefinition;
     }
 
     /**
@@ -36,7 +43,7 @@ public function adaptForm(AdaptFormEvent $event)
 
         $mediaSet = $this->repository->getPageMediaSet($page);
 
-        $type = new PageMediaCollectionAdminType($page);
+        $type = new PageMediaCollectionAdminType($page, $this->mediaSetDefinition);
         $mediaWidget = new FormWidget($type, new ArrayCollection($mediaSet));
 
         $event->getTabPane()->addTab(new Tab('Media Set', $mediaWidget));
diff --git a/Form/PageMediaCollectionAdminType.php b/Form/PageMediaCollectionAdminType.php
index 8b2e5df..4ffb346 100644
--- a/Form/PageMediaCollectionAdminType.php
+++ b/Form/PageMediaCollectionAdminType.php
@@ -4,6 +4,7 @@
 
 use ArsThanea\PageMediaSetBundle\Entity\PageMedia;
 use ArsThanea\PageMediaSetBundle\Service\HasMediaSetInterface;
+use ArsThanea\PageMediaSetBundle\Service\MediaSetDefinitionInterface;
 use ArsThanea\PageMediaSetBundle\Service\HasRichMediaInterface;
 use Doctrine\Common\Collections\Collection;
 use Symfony\Component\Form\AbstractType;
@@ -19,9 +20,15 @@ class PageMediaCollectionAdminType extends AbstractType
      */
     private $page;
 
-    public function __construct(HasMediaSetInterface $page)
+    /**
+     * @var MediaSetDefinitionInterface
+     */
+    private $mediaSetDefinition;
+
+    public function __construct(HasMediaSetInterface $page, MediaSetDefinitionInterface $mediaSetDefinition)
     {
         $this->page = $page;
+        $this->mediaSetDefinition = $mediaSetDefinition;
     }
 
     public function buildForm(FormBuilderInterface $builder, array $options)
@@ -32,7 +39,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             'allow_add'    => false,
             'type'         => PageMediaAdminType::class,
             'options'      => [
-                'media_types' => $this->page->getMediaSetDefinition(),
+                'media_types' => $this->mediaSetDefinition->getMediaSetDefinition($this->page),
                 'images_only' => false === $this->page instanceof HasRichMediaInterface
             ],
             'attr'         => [
@@ -44,11 +51,13 @@ public function buildForm(FormBuilderInterface $builder, array $options)
             /** @var Collection $data */
             $data = $event->getData();
 
+            $mediaSet = $this->mediaSetDefinition->getMediaSetDefinition($this->page);
+
             $types = array_map(function ($type) use ($data) {
                 return $data->filter(function (PageMedia $element) use ($type) {
                     return $type === $element->getType();
                 })->first() ? : (new PageMedia)->setType($type)->setPageId($this->page->getId())->setPageType($this->page->getType());
-            }, array_combine($this->page->getMediaSetDefinition(), $this->page->getMediaSetDefinition()));
+            }, array_combine($mediaSet, $mediaSet));
 
             $data->clear();
             foreach ($types as $key => $item) {
diff --git a/README.md b/README.md
index 15f60cd..da74006 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,18 @@ page_media_set:
 
 You need to configure all your media types, but the constraints are optional. 
 
+### Predefined media set types
+
+You can configure the media set definitions using symfony config, instead of returning them using the `getMediaSetDefinition` method.
+
+```yaml
+# app/config/config.yml
+page_media_set:
+  types:
+    'Acme\Foo\Bar\BazEntity': [ 'foo', 'bar' ]
+```
+
+In this case `Acme\Foo\Bar\BazEntity::getMediaSetDefinition()` won’t be called, `foo` and `bar` formats will be used.
 
 ### Format names
 
diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index 3296425..dc6e5c0 100644
--- a/Resources/config/services.yml
+++ b/Resources/config/services.yml
@@ -4,11 +4,12 @@ parameters:
   page_media_set.node_listener.class: ArsThanea\PageMediaSetBundle\EventListener\PageMediaSetFormAdaptorListener
   page_media_set.form.page_media_admin_type.class: ArsThanea\PageMediaSetBundle\Form\PageMediaAdminType
   page_media_set.twig.page_media_set_twig_extension.class: ArsThanea\PageMediaSetBundle\Twig\PageMediaSetTwigExtension
+  page_media_set.media_set_definition.class: 'ArsThanea\PageMediaSetBundle\Service\MediaSetDefinitionService'
 
 services:
   page_media_set.page_media_set_service:
     class: %page_media_set.page_media_set_service.class%
-    arguments: [ @page_media_set.repository ]
+    arguments: [ '@page_media_set.repository', '@page_media_set.media_set_definition' ]
 
   page_media_set.format_repository:
     class: %page_media_set.format_repository.class%
@@ -31,7 +32,7 @@ services:
 
   page_media_set.node_listener:
     class: %page_media_set.node_listener.class%
-    arguments: [ @page_media_set.repository ]
+    arguments: [ '@page_media_set.repository', '@page_media_set.media_set_definition' ]
     tags:
       - { name: kernel.event_listener, event: kunstmaan_node.adaptForm, method: adaptForm }
 
@@ -41,3 +42,7 @@ services:
     tags:
       - { name: form.type, alias: page_media }
 
+
+  page_media_set.media_set_definition:
+    class: '%page_media_set.media_set_definition.class%'
+    arguments: [ "%page_media_set.types%" ]
diff --git a/Service/HasRichMediaInterface.php b/Service/HasRichMediaInterface.php
index a609a61..8e42905 100644
--- a/Service/HasRichMediaInterface.php
+++ b/Service/HasRichMediaInterface.php
@@ -2,7 +2,7 @@
 
 namespace ArsThanea\PageMediaSetBundle\Service;
 
-class HasRichMediaInterface
+interface HasRichMediaInterface extends HasMediaSetInterface
 {
 
 }
diff --git a/Service/MediaSetDefinitionInterface.php b/Service/MediaSetDefinitionInterface.php
new file mode 100644
index 0000000..f142c4a
--- /dev/null
+++ b/Service/MediaSetDefinitionInterface.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace ArsThanea\PageMediaSetBundle\Service;
+
+interface MediaSetDefinitionInterface
+{
+    /**
+     * @param HasMediaSetInterface $object
+     * @return array
+     */
+    public function getMediaSetDefinition(HasMediaSetInterface $object);
+
+    /**
+     * @param string $type
+     * @return array
+     */
+    public function getDefaultMediaSetDefinition($type);
+}
diff --git a/Service/MediaSetDefinitionService.php b/Service/MediaSetDefinitionService.php
new file mode 100644
index 0000000..743784a
--- /dev/null
+++ b/Service/MediaSetDefinitionService.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace ArsThanea\PageMediaSetBundle\Service;
+
+class MediaSetDefinitionService implements MediaSetDefinitionInterface
+{
+    /**
+     * @var array
+     */
+    private $types;
+
+    /**
+     * @param array $types
+     */
+    public function __construct(array $types)
+    {
+        $this->types = array_map(function ($v) { return (array)$v; }, $types);
+    }
+
+
+    /**
+     * @param HasMediaSetInterface $object
+     * @return array
+     */
+    public function getMediaSetDefinition(HasMediaSetInterface $object)
+    {
+        if (isset($this->types[$object->getType()])) {
+            return (array)$this->types[$object->getType()];
+        }
+
+        return $object->getMediaSetDefinition();
+    }
+
+    /**
+     * @param string $type
+     * @return array
+     */
+    public function getDefaultMediaSetDefinition($type)
+    {
+        if (isset($this->types[$type])) {
+            return $this->types[$type];
+        }
+
+        return [];
+    }
+}
diff --git a/Service/PageMediaSetService.php b/Service/PageMediaSetService.php
index e740e6c..4e837fe 100644
--- a/Service/PageMediaSetService.php
+++ b/Service/PageMediaSetService.php
@@ -22,15 +22,21 @@ class PageMediaSetService
      */
     private $repository;
 
-    public function __construct(PageMediaRepository $repository)
+    /**
+     * @var MediaSetDefinitionInterface
+     */
+    private $mediaSetDefinition;
+
+    public function __construct(PageMediaRepository $repository, MediaSetDefinitionInterface $mediaSetDefinition)
     {
         $this->repository = $repository;
+        $this->mediaSetDefinition = $mediaSetDefinition;
     }
 
     public function getPageMedia(HasMediaSetInterface $page, $name = null)
     {
         if (null === $name) {
-            list ($name) = $page->getMediaSetDefinition();
+            list ($name) = $this->mediaSetDefinition->getMediaSetDefinition($page);
         }
 
         $mediaSet = $this->getPageMediaSet($page);
@@ -71,4 +77,4 @@ private function getPageMediaSet(HasMediaSetInterface $page)
         return $this->mediaSets[$page->getType()][$page->getId()];
     }
 
-}
\ No newline at end of file
+}