diff --git a/src/Kunstmaan/FixturesBundle/Loader/FixtureLoader.php b/src/Kunstmaan/FixturesBundle/Loader/FixtureLoader.php
index 7f5bb10a0b..927bd1b209 100644
--- a/src/Kunstmaan/FixturesBundle/Loader/FixtureLoader.php
+++ b/src/Kunstmaan/FixturesBundle/Loader/FixtureLoader.php
@@ -24,7 +24,7 @@ abstract class FixtureLoader implements FixtureInterface, ContainerAwareInterfac
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $this->manager = $manager;
         $options = $this->getOptions();
diff --git a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/GroupFixtures.php b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/GroupFixtures.php
index 58c28a3736..9669544aa5 100644
--- a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/GroupFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/GroupFixtures.php
@@ -19,7 +19,7 @@ class GroupFixtures extends AbstractFixture implements OrderedFixtureInterface
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $group1 = $this->createGroup($manager, 'Administrators', [
             $this->getReference(RoleFixtures::REFERENCE_PERMISSIONMANAGER_ROLE),
diff --git a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/RoleFixtures.php b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/RoleFixtures.php
index b4c2a27e1e..407ae45e16 100644
--- a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/RoleFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/RoleFixtures.php
@@ -22,7 +22,7 @@ class RoleFixtures extends AbstractFixture implements OrderedFixtureInterface
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $role1 = $this->createRole($manager, 'ROLE_PERMISSIONMANAGER');
         $role2 = $this->createRole($manager, 'ROLE_ADMIN');
diff --git a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/UserFixtures.php b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/UserFixtures.php
index d8321a8a2f..d2f3f240c1 100644
--- a/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/UserFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/DataFixtures/ORM/UserFixtures.php
@@ -28,7 +28,7 @@ public function __construct(UserManager $userManager, string $defaultAdminLocale
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $password = substr(rtrim(strtr(base64_encode(random_bytes(32)), '+/', '-_'), '='), 0, 8);
 
diff --git a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/article/DataFixtures/ORM/ArticleGenerator/ArticleFixtures.php b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/article/DataFixtures/ORM/ArticleGenerator/ArticleFixtures.php
index c49b78f849..7a0ec5bbeb 100644
--- a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/article/DataFixtures/ORM/ArticleGenerator/ArticleFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/article/DataFixtures/ORM/ArticleGenerator/ArticleFixtures.php
@@ -49,7 +49,7 @@ public function __construct(
      *
      * @param ObjectManager $manager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         if ($this->isMultiLanguage) {
             $languages = explode('|', $this->requiredLocales);
diff --git a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/defaultsite/DataFixtures/ORM/DefaultSiteGenerator/DefaultSiteFixtures.php b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/defaultsite/DataFixtures/ORM/DefaultSiteGenerator/DefaultSiteFixtures.php
index bc0d51c21c..c8cd69a558 100755
--- a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/defaultsite/DataFixtures/ORM/DefaultSiteGenerator/DefaultSiteFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/defaultsite/DataFixtures/ORM/DefaultSiteGenerator/DefaultSiteFixtures.php
@@ -84,7 +84,7 @@ public function __construct(
      *
      * @param ObjectManager $manager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $this->manager = $manager;
 
diff --git a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/searchpage/DataFixtures/ORM/SearchPageGenerator/SearchFixtures.php b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/searchpage/DataFixtures/ORM/SearchPageGenerator/SearchFixtures.php
index 9bb2b1d355..f734a97c90 100644
--- a/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/searchpage/DataFixtures/ORM/SearchPageGenerator/SearchFixtures.php
+++ b/src/Kunstmaan/GeneratorBundle/Resources/SensioGeneratorBundle/skeleton/searchpage/DataFixtures/ORM/SearchPageGenerator/SearchFixtures.php
@@ -41,7 +41,7 @@ public function __construct(
      *
      * @param ObjectManager $manager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         if ($this->isMultiLanguage) {
             $languages = explode('|', $this->requiredLocales);
diff --git a/src/Kunstmaan/MediaBundle/DataFixtures/ORM/FolderFixtures.php b/src/Kunstmaan/MediaBundle/DataFixtures/ORM/FolderFixtures.php
index 7b16da69bf..bdcc07e20a 100644
--- a/src/Kunstmaan/MediaBundle/DataFixtures/ORM/FolderFixtures.php
+++ b/src/Kunstmaan/MediaBundle/DataFixtures/ORM/FolderFixtures.php
@@ -16,7 +16,7 @@ class FolderFixtures extends AbstractFixture implements OrderedFixtureInterface
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $gal = new Folder();
         $gal->setRel(Folder::TYPE_MEDIA);
diff --git a/src/Kunstmaan/TranslatorBundle/DataFixtures/ORM/TranslationFixtures.php b/src/Kunstmaan/TranslatorBundle/DataFixtures/ORM/TranslationFixtures.php
index 216b5f9059..a3177cb662 100644
--- a/src/Kunstmaan/TranslatorBundle/DataFixtures/ORM/TranslationFixtures.php
+++ b/src/Kunstmaan/TranslatorBundle/DataFixtures/ORM/TranslationFixtures.php
@@ -22,7 +22,7 @@ class TranslationFixtures extends AbstractFixture implements OrderedFixtureInter
     /**
      * Load data fixtures with the passed EntityManager
      */
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $this->repo = $manager->getRepository(Entity::class);
 
diff --git a/src/Kunstmaan/TranslatorBundle/Tests/Fixtures/TranslationDataFixture.php b/src/Kunstmaan/TranslatorBundle/Tests/Fixtures/TranslationDataFixture.php
index 8e06215ffb..2b301b5ac3 100644
--- a/src/Kunstmaan/TranslatorBundle/Tests/Fixtures/TranslationDataFixture.php
+++ b/src/Kunstmaan/TranslatorBundle/Tests/Fixtures/TranslationDataFixture.php
@@ -23,7 +23,7 @@ public function __construct()
         $this->faker = FakerFactory::create();
     }
 
-    public function load(ObjectManager $manager)
+    public function load(ObjectManager $manager): void
     {
         $this->errorKeys($manager);
         $this->exceptionKeys($manager);