diff --git a/sections/hbvo-test.liquid b/sections/hbvo-test.liquid
index 72d7eebcd68..e115bf2829d 100644
--- a/sections/hbvo-test.liquid
+++ b/sections/hbvo-test.liquid
@@ -109,7 +109,7 @@
           class="field__input"
           autocomplete="adres"
           type="address"
-          id="ContactForm-adres"
+          required id="ContactForm-adres"
           name="contact[ Adres"
           value="{% if form.name %}{{ form.name }}{% elsif customer %}{{ customer.name }}{% endif %}"
           placeholder="Adres"
@@ -121,7 +121,7 @@
           class="field__input"
           autocomplete="postcode"
           type="postalzip"
-          id="ContactForm-postcode"
+          required id="ContactForm-postcode"
           name="contact[ Postcode"
           value="{% if form.name %}{{ form.name }}{% elsif customer %}{{ customer.name }}{% endif %}"
           placeholder="Postcode"