diff --git a/assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show-plans-show.hbs b/assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show-plans-show.hbs
index 6f03936..ed59c62 100644
--- a/assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show-plans-show.hbs
+++ b/assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show-plans-show.hbs
@@ -43,7 +43,11 @@
     <label for="interval">
       {{i18n 'discourse_subscriptions.admin.plans.plan.interval'}}
     </label>
-    {{combo-box valueAttribute="value" content=model.plan.intervals value=model.plan.interval}}
+    {{#if planFieldDisabled}}
+      {{input disabled=true value=model.plan.interval}}
+    {{else}}
+      {{combo-box valueAttribute="value" content=model.plan.intervals value=model.plan.interval}}
+    {{/if}}
   </p>
   <p>
     <label for="active">
diff --git a/plugin.rb b/plugin.rb
index 86b11c0..3e6336a 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -2,7 +2,7 @@
 
 # name: discourse-subscriptions
 # about: Integrates Stripe into Discourse to allow visitors to subscribe
-# version: 2.8.0
+# version: 2.8.1
 # url: https://github.com/rimian/discourse-subscriptions
 # authors: Rimian Perkins
 
@@ -44,7 +44,7 @@ after_initialize do
 
   ::Stripe.set_app_info(
     'Discourse Subscriptions',
-    version: '2.8.0',
+    version: '2.8.1',
     url: 'https://github.com/rimian/discourse-subscriptions'
   )