diff --git a/src/main/resources/fileTemplates/form_type.php b/src/main/resources/fileTemplates/form_type.php
index b8d42cfb6..5ceb0c68a 100644
--- a/src/main/resources/fileTemplates/form_type.php
+++ b/src/main/resources/fileTemplates/form_type.php
@@ -10,11 +10,11 @@
 
 class {{ class }} extends AbstractType
 {
-    public function buildForm(FormBuilderInterface $builder, array $options)
+    public function buildForm(FormBuilderInterface $builder, array $options) : void
     {
     }
 
-    public function configureOptions(OptionsResolver $resolver)
+    public function configureOptions(OptionsResolver $resolver) : void
     {
     }
 }