diff --git a/src/UnicaenApp/Form/View/Helper/FormRowDateInfSup.php b/src/UnicaenApp/Form/View/Helper/FormRowDateInfSup.php
index 3b47fda7dd52a7e90b52e112df9474e6580be5c6..abe412e5c403e29fc2a0a0d7494f3209948c8581 100644
--- a/src/UnicaenApp/Form/View/Helper/FormRowDateInfSup.php
+++ b/src/UnicaenApp/Form/View/Helper/FormRowDateInfSup.php
@@ -1,6 +1,7 @@
 <?php
 namespace UnicaenApp\Form\View\Helper;
 
+use Laminas\Form\View\Helper\FormElement;
 use Laminas\Form\View\Helper\FormRow;
 use UnicaenApp\Form\Element\DateInfSup;
 use Laminas\Form\ElementInterface;
@@ -90,7 +91,7 @@ class FormRowDateInfSup extends FormRow
     /**
      * {@inheritdoc}
      */
-    protected function getElementHelper()
+    protected function getElementHelper(): FormElement
     {
         if (method_exists($this->view, 'plugin')) {
             $this->elementHelper = $this->view->plugin('formDateInfSup');