diff --git a/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/PaymentType.php b/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/PaymentType.php
index 080af9ba51..62b1b54081 100644
--- a/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/PaymentType.php
+++ b/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/PaymentType.php
@@ -69,7 +69,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
     {
         $builder
             ->add('paymentProvider', PaymentProviderChoiceType::class, [
-                'constraints' => [new Valid(), new NotBlank(['groups' => [$this->validationGroups]])],
+                'constraints' => [new Valid(), new NotBlank(['groups' => $this->validationGroups])],
                 'label' => 'coreshop.ui.payment_provider',
                 'subject' => $options['payment_subject'],
             ])
diff --git a/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/SummaryType.php b/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/SummaryType.php
index d67ee05440..429565841e 100644
--- a/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/SummaryType.php
+++ b/src/CoreShop/Bundle/CoreBundle/Form/Type/Checkout/SummaryType.php
@@ -27,7 +27,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
     {
         $builder
             ->add('acceptTerms', CheckboxType::class, [
-                'constraints' => [new NotBlank(['groups' => [$this->validationGroups]])],
+                'constraints' => [new NotBlank(['groups' => $this->validationGroups])],
                 'label' => 'coreshop.ui.accept_terms',
                 'mapped' => false,
             ]);
diff --git a/src/CoreShop/Bundle/CoreBundle/Form/Type/GuestRegistrationType.php b/src/CoreShop/Bundle/CoreBundle/Form/Type/GuestRegistrationType.php
index 4ddbe0df68..450e4df549 100644
--- a/src/CoreShop/Bundle/CoreBundle/Form/Type/GuestRegistrationType.php
+++ b/src/CoreShop/Bundle/CoreBundle/Form/Type/GuestRegistrationType.php
@@ -54,7 +54,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                 ],
                 'guest' => true,
                 'constraints' => [
-                    new Valid(['groups' => [$this->validationGroupsGuest]]),
+                    new Valid(['groups' => $this->validationGroupsGuest]),
                 ],
             ])
             ->add('address', AddressType::class, [
@@ -63,7 +63,7 @@ public function buildForm(FormBuilderInterface $builder, array $options)
                     'class' => 'cs-address',
                 ],
                 'constraints' => [
-                    new Valid(['groups' => [$this->validationGroups]]),
+                    new Valid(['groups' => $this->validationGroups]),
                 ],
             ])