diff --git a/app/controllers/ticket_purchases_controller.rb b/app/controllers/ticket_purchases_controller.rb
index dbf4755e..4221fb4e 100644
--- a/app/controllers/ticket_purchases_controller.rb
+++ b/app/controllers/ticket_purchases_controller.rb
@@ -6,7 +6,7 @@ class TicketPurchasesController < ApplicationController
 
   def create
     current_user.ticket_purchases.by_conference(@conference).unpaid.destroy_all
-    message = TicketPurchase.purchase(@conference, current_user, params[:tickets][0])
+    message = TicketPurchase.purchase(@conference, current_user, params[:tickets].try(:first))
     if message.blank?
       if current_user.ticket_purchases.by_conference(@conference).unpaid.any?
         redirect_to new_conference_payment_path,