diff --git a/app/models/invoice.rb b/app/models/invoice.rb
index 16f42f4d0..298fae6e6 100644
--- a/app/models/invoice.rb
+++ b/app/models/invoice.rb
@@ -72,6 +72,12 @@ class Invoice < ActiveRecord::Base
       errors.add(:base, I18n.t('cannot_cancel_paid_invoice'))
       return false
     end
+
+    if cancelled?
+      errors.add(:base, I18n.t('cannot_cancel_cancelled_invoice'))
+      return false
+    end
+
     self.cancelled_at = Time.zone.now
     save
   end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 711ac4c1f..1f2d1c5c6 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -738,4 +738,5 @@ en:
   cancelled: 'Cancelled'
   cancel_date: 'Cancel date'
   cannot_cancel_paid_invoice: 'Cannot cancel paid invoice'
+  cannot_cancel_cancelled_invoice: 'Cannot cancel cancelled invoice'
   cannot_bind_cancelled_invoice: 'Cannot bind cancelled invoice'