diff --git a/src/Form/Type/TpayGatewayConfigurationType.php b/src/Form/Type/TpayGatewayConfigurationType.php
index 59099980..0f15cbb9 100644
--- a/src/Form/Type/TpayGatewayConfigurationType.php
+++ b/src/Form/Type/TpayGatewayConfigurationType.php
@@ -38,6 +38,7 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
                     'constraints' => [
                         new NotBlank(allowNull: false, groups: ['sylius']),
                     ],
+                    'empty_data' => '',
                 ],
             )
             ->add(
@@ -49,6 +50,7 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
                     'constraints' => [
                         new NotBlank(allowNull: false, groups: ['sylius']),
                     ],
+                    'empty_data' => '',
                 ],
             )
             ->add(