diff --git a/disqus.admin.inc b/disqus.admin.inc
index 4eb2e5a..775380b 100644
--- a/disqus.admin.inc
+++ b/disqus.admin.inc
@@ -95,7 +95,8 @@ function disqus_admin_settings() {
     '#type' => 'fieldset',
     '#title' => t('Advanced'),
     '#group' => 'settings',
-    '#description' => t('Use these settings to configure the more advanced uses of Disqus. You can find more information about these in the <a href="@applications">Applications</a> section of Disqus.', array(
+    '#description' => t('Use these settings to configure the more advanced uses of Disqus. You can find more information about these in the <a href="@applications">Applications</a> section of Disqus. Some of these features require at least the <a href="@addons">Disqus Professional Add-on Package</a>.', array(
+      '@addons' => 'http://disqus.com/admin/addons/packages/',
       '@applications' => 'http://disqus.com/api/applications/',
     )),
   );
@@ -112,7 +113,7 @@ function disqus_admin_settings() {
   $form['advanced']['disqus_sso'] = array(
     '#type' => 'checkbox',
     '#title' => t('Single Sign-On'),
-    '#description' => t('Provide <a href="@sso">Single Sign-On</a> access to your site.', array(
+    '#description' => t('Provide <a href="@sso">Single Sign-On</a> access to your site. This feature requires at least the Professional Add-on Package.', array(
       '@sso' => 'http://disqus.com/api/sso/',
     )),
     '#default_value' => variable_get('disqus_sso', FALSE),