diff --git a/web/typo3conf/ext/ep_theme/Resources/Private/Forms/AdresscheckForm.form.yaml b/web/typo3conf/ext/ep_theme/Resources/Private/Forms/AdresscheckForm.form.yaml
index a4f93a60..f7241edd 100644
--- a/web/typo3conf/ext/ep_theme/Resources/Private/Forms/AdresscheckForm.form.yaml
+++ b/web/typo3conf/ext/ep_theme/Resources/Private/Forms/AdresscheckForm.form.yaml
@@ -84,11 +84,17 @@ renderables:
     type: Text
     identifier: first-name
     label: Vorname
+    properties:
+      fluidAdditionalAttributes:
+        required: required
   -
     defaultValue: ''
     type: Text
     identifier: last-name
     label: Name
+    properties:
+      fluidAdditionalAttributes:
+        required: required
   -
     defaultValue: ''
     type: Text