diff --git a/plone/formwidget/captcha/demo/configure.zcml b/plone/formwidget/captcha/demo/configure.zcml
index bddbf94..5415829 100644
--- a/plone/formwidget/captcha/demo/configure.zcml
+++ b/plone/formwidget/captcha/demo/configure.zcml
@@ -3,18 +3,20 @@
     xmlns:browser="http://namespaces.zope.org/browser"
     i18n_domain="plone.formwidget.captcha">
 
+    <!-- Captcha form -->
     <browser:page
         name="captcha_form"
         for="Products.CMFPlone.interfaces.siteroot.IPloneSiteRoot"
         class=".form.CaptchaForm"
         permission = "zope.Public" />
 
+    <!-- Captcha factory -->
     <adapter
         for="Products.CMFPlone.interfaces.siteroot.IPloneSiteRoot"
         provides=".form.ICaptchaForm"
         factory=".form.Captcha" />
 
-    <!-- Validators -->
+    <!-- Captcha validator -->
     <adapter
         factory=".form.CaptchaValidator"
         />
diff --git a/plone/formwidget/captcha/demo/form.py b/plone/formwidget/captcha/demo/form.py
index 5c2cf70..eaad6b1 100644
--- a/plone/formwidget/captcha/demo/form.py
+++ b/plone/formwidget/captcha/demo/form.py
@@ -46,5 +46,5 @@ class BaseForm(form.Form):
 
 CaptchaForm = wrap_form(BaseForm)
 
-# Register Captcha Validator for the captcha field in the ICaptchaForm
+# Register Captcha validator for the captcha field in the ICaptchaForm
 validator.WidgetValidatorDiscriminators(CaptchaValidator, field=ICaptchaForm['captcha'])
\ No newline at end of file