diff --git a/app/controllers/payments_controller.rb b/app/controllers/payments_controller.rb
index 1a9cf150..121e0c4b 100644
--- a/app/controllers/payments_controller.rb
+++ b/app/controllers/payments_controller.rb
@@ -14,11 +14,8 @@ class PaymentsController < ApplicationController
   end
 
   def create
-    @total_amount_to_pay = Ticket.total_price(@conference, current_user, paid: false)
-
     @payment = Payment.new payment_params.merge(stripe_customer_email: params[:stripeEmail],
                                                 stripe_customer_token: params[:stripeToken],
-                                                amount: @total_amount_to_pay.cents,
                                                 user: current_user,
                                                 conference: @conference)
 
@@ -27,6 +24,7 @@ class PaymentsController < ApplicationController
       redirect_to conference_conference_registration_path(@conference.short_title), flash:
         { success: 'Thanks! You have purchased your tickets successfully.' }
     else
+      @total_amount_to_pay = Ticket.total_price(@conference, current_user, paid: false)
       @unpaid_ticket_purchases = current_user.ticket_purchases.unpaid.by_conference(@conference)
       render :new
     end
diff --git a/app/models/payment.rb b/app/models/payment.rb
index ef2792c3..4ad4df85 100644
--- a/app/models/payment.rb
+++ b/app/models/payment.rb
@@ -7,7 +7,6 @@ class Payment < ActiveRecord::Base
   attr_accessor :stripe_customer_token
 
   validates :status, presence: true
-  validates :amount, presence: true, numericality: { greater_than: 0 }
   validates :user_id, presence: true
   validates :conference_id, presence: true
 
@@ -22,13 +21,9 @@ class Payment < ActiveRecord::Base
   end
 
   def purchase
-    customer = Stripe::Customer.create email: stripe_customer_email,
-                                       source: stripe_customer_token,
-                                       description: user.name
-
-    gateway_response = Stripe::Charge.create customer: customer.id,
+    gateway_response = Stripe::Charge.create source: stripe_customer_token,
                                              receipt_email: stripe_customer_email,
-                                             description: 'ticket purchases',
+                                             description: "ticket purchases(#{user.username})",
                                              amount: amount_to_pay,
                                              currency: conference.tickets.first.price_currency
 
diff --git a/db/migrate/20160606040848_create_payments.rb b/db/migrate/20160606040848_create_payments.rb
index 6c56bb5d..6792ad02 100644
--- a/db/migrate/20160606040848_create_payments.rb
+++ b/db/migrate/20160606040848_create_payments.rb
@@ -2,7 +2,7 @@ class CreatePayments < ActiveRecord::Migration
   def change
     create_table :payments do |t|
       t.string :last4
-      t.integer :amount, null: false
+      t.integer :amount
       t.string :authorization_code
       t.integer :status, default: 0, null: false
       t.integer :user_id, null: false
diff --git a/db/schema.rb b/db/schema.rb
index 6c3ceaef..6213090c 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -265,7 +265,7 @@ ActiveRecord::Schema.define(version: 20160704092023) do
 
   create_table "payments", force: :cascade do |t|
     t.string   "last4"
-    t.integer  "amount",                         null: false
+    t.integer  "amount"
     t.string   "authorization_code"
     t.integer  "status",             default: 0, null: false
     t.integer  "user_id",                        null: false
diff --git a/spec/models/payment_spec.rb b/spec/models/payment_spec.rb
index e16a8f67..4512fe80 100644
--- a/spec/models/payment_spec.rb
+++ b/spec/models/payment_spec.rb
@@ -14,25 +14,11 @@ describe Payment do
       expect(build(:payment)).to be_valid
     end
 
-    it { is_expected.to validate_presence_of(:amount) }
-
     it { is_expected.to validate_presence_of(:status) }
 
     it { is_expected.to validate_presence_of(:user_id) }
 
     it { is_expected.to validate_presence_of(:conference_id) }
-
-    it 'is not valid with a amount equals zero' do
-      should_not allow_value(0).for(:amount)
-    end
-
-    it 'is not valid with a amount smaller than zero' do
-      should_not allow_value(-1).for(:amount)
-    end
-
-    it 'is valid with a amount greater than zero' do
-      should allow_value(1).for(:amount)
-    end
   end
 
   describe '#amount_to_pay' do